3 * Global functions used everywhere.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
23 if ( !defined( 'MEDIAWIKI' ) ) {
24 die( "This file is part of MediaWiki, it is not a valid entry point" );
27 use MediaWiki\Logger\LoggerFactory
;
28 use MediaWiki\ProcOpenError
;
29 use MediaWiki\Session\SessionManager
;
30 use MediaWiki\MediaWikiServices
;
31 use MediaWiki\Shell\Shell
;
32 use Wikimedia\ScopedCallback
;
33 use Wikimedia\Rdbms\DBReplicationWaitError
;
38 * This queues an extension to be loaded through
39 * the ExtensionRegistry system.
41 * @param string $ext Name of the extension to load
42 * @param string|null $path Absolute path of where to find the extension.json file
45 function wfLoadExtension( $ext, $path = null ) {
47 global $wgExtensionDirectory;
48 $path = "$wgExtensionDirectory/$ext/extension.json";
50 ExtensionRegistry
::getInstance()->queue( $path );
54 * Load multiple extensions at once
56 * Same as wfLoadExtension, but more efficient if you
57 * are loading multiple extensions.
59 * If you want to specify custom paths, you should interact with
60 * ExtensionRegistry directly.
62 * @see wfLoadExtension
63 * @param string[] $exts Array of extension names to load
66 function wfLoadExtensions( array $exts ) {
67 global $wgExtensionDirectory;
68 $registry = ExtensionRegistry
::getInstance();
69 foreach ( $exts as $ext ) {
70 $registry->queue( "$wgExtensionDirectory/$ext/extension.json" );
77 * @see wfLoadExtension
78 * @param string $skin Name of the extension to load
79 * @param string|null $path Absolute path of where to find the skin.json file
82 function wfLoadSkin( $skin, $path = null ) {
84 global $wgStyleDirectory;
85 $path = "$wgStyleDirectory/$skin/skin.json";
87 ExtensionRegistry
::getInstance()->queue( $path );
91 * Load multiple skins at once
93 * @see wfLoadExtensions
94 * @param string[] $skins Array of extension names to load
97 function wfLoadSkins( array $skins ) {
98 global $wgStyleDirectory;
99 $registry = ExtensionRegistry
::getInstance();
100 foreach ( $skins as $skin ) {
101 $registry->queue( "$wgStyleDirectory/$skin/skin.json" );
106 * Like array_diff( $a, $b ) except that it works with two-dimensional arrays.
111 function wfArrayDiff2( $a, $b ) {
112 return array_udiff( $a, $b, 'wfArrayDiff2_cmp' );
116 * @param array|string $a
117 * @param array|string $b
120 function wfArrayDiff2_cmp( $a, $b ) {
121 if ( is_string( $a ) && is_string( $b ) ) {
122 return strcmp( $a, $b );
123 } elseif ( count( $a ) !== count( $b ) ) {
124 return count( $a ) <=> count( $b );
128 while ( key( $a ) !== null && key( $b ) !== null ) {
129 $valueA = current( $a );
130 $valueB = current( $b );
131 $cmp = strcmp( $valueA, $valueB );
143 * Like array_filter with ARRAY_FILTER_USE_BOTH, but works pre-5.6.
146 * @param callable $callback Will be called with the array value and key (in that order) and
147 * should return a bool which will determine whether the array element is kept.
150 function wfArrayFilter( array $arr, callable
$callback ) {
151 if ( defined( 'ARRAY_FILTER_USE_BOTH' ) ) {
152 return array_filter( $arr, $callback, ARRAY_FILTER_USE_BOTH
);
154 $filteredKeys = array_filter( array_keys( $arr ), function ( $key ) use ( $arr, $callback ) {
155 return call_user_func( $callback, $arr[$key], $key );
157 return array_intersect_key( $arr, array_fill_keys( $filteredKeys, true ) );
161 * Like array_filter with ARRAY_FILTER_USE_KEY, but works pre-5.6.
164 * @param callable $callback Will be called with the array key and should return a bool which
165 * will determine whether the array element is kept.
168 function wfArrayFilterByKey( array $arr, callable
$callback ) {
169 return wfArrayFilter( $arr, function ( $val, $key ) use ( $callback ) {
170 return call_user_func( $callback, $key );
175 * Appends to second array if $value differs from that in $default
177 * @param string|int $key
178 * @param mixed $value
179 * @param mixed $default
180 * @param array &$changed Array to alter
181 * @throws MWException
183 function wfAppendToArrayIfNotDefault( $key, $value, $default, &$changed ) {
184 if ( is_null( $changed ) ) {
185 throw new MWException( 'GlobalFunctions::wfAppendToArrayIfNotDefault got null' );
187 if ( $default[$key] !== $value ) {
188 $changed[$key] = $value;
193 * Merge arrays in the style of getUserPermissionsErrors, with duplicate removal
195 * wfMergeErrorArrays(
208 * @param array $array1,...
211 function wfMergeErrorArrays( /*...*/ ) {
212 $args = func_get_args();
214 foreach ( $args as $errors ) {
215 foreach ( $errors as $params ) {
216 $originalParams = $params;
217 if ( $params[0] instanceof MessageSpecifier
) {
219 $params = array_merge( [ $msg->getKey() ], $msg->getParams() );
221 # @todo FIXME: Sometimes get nested arrays for $params,
222 # which leads to E_NOTICEs
223 $spec = implode( "\t", $params );
224 $out[$spec] = $originalParams;
227 return array_values( $out );
231 * Insert array into another array after the specified *KEY*
233 * @param array $array The array.
234 * @param array $insert The array to insert.
235 * @param mixed $after The key to insert after
238 function wfArrayInsertAfter( array $array, array $insert, $after ) {
239 // Find the offset of the element to insert after.
240 $keys = array_keys( $array );
241 $offsetByKey = array_flip( $keys );
243 $offset = $offsetByKey[$after];
245 // Insert at the specified offset
246 $before = array_slice( $array, 0, $offset +
1, true );
247 $after = array_slice( $array, $offset +
1, count( $array ) - $offset, true );
249 $output = $before +
$insert +
$after;
255 * Recursively converts the parameter (an object) to an array with the same data
257 * @param object|array $objOrArray
258 * @param bool $recursive
261 function wfObjectToArray( $objOrArray, $recursive = true ) {
263 if ( is_object( $objOrArray ) ) {
264 $objOrArray = get_object_vars( $objOrArray );
266 foreach ( $objOrArray as $key => $value ) {
267 if ( $recursive && ( is_object( $value ) ||
is_array( $value ) ) ) {
268 $value = wfObjectToArray( $value );
271 $array[$key] = $value;
278 * Get a random decimal value between 0 and 1, in a way
279 * not likely to give duplicate values for any realistic
280 * number of articles.
282 * @note This is designed for use in relation to Special:RandomPage
283 * and the page_random database field.
287 function wfRandom() {
288 // The maximum random value is "only" 2^31-1, so get two random
289 // values to reduce the chance of dupes
290 $max = mt_getrandmax() +
1;
291 $rand = number_format( ( mt_rand() * $max +
mt_rand() ) / $max / $max, 12, '.', '' );
296 * Get a random string containing a number of pseudo-random hex characters.
298 * @note This is not secure, if you are trying to generate some sort
299 * of token please use MWCryptRand instead.
301 * @param int $length The length of the string to generate
305 function wfRandomString( $length = 32 ) {
307 for ( $n = 0; $n < $length; $n +
= 7 ) {
308 $str .= sprintf( '%07x', mt_rand() & 0xfffffff );
310 return substr( $str, 0, $length );
314 * We want some things to be included as literal characters in our title URLs
315 * for prettiness, which urlencode encodes by default. According to RFC 1738,
316 * all of the following should be safe:
320 * RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved
321 * character which should not be encoded. More importantly, google chrome
322 * always converts %7E back to ~, and converting it in this function can
323 * cause a redirect loop (T105265).
325 * But + is not safe because it's used to indicate a space; &= are only safe in
326 * paths and not in queries (and we don't distinguish here); ' seems kind of
327 * scary; and urlencode() doesn't touch -_. to begin with. Plus, although /
328 * is reserved, we don't care. So the list we unescape is:
332 * However, IIS7 redirects fail when the url contains a colon (see T24709),
333 * so no fancy : for IIS7.
335 * %2F in the page titles seems to fatally break for some reason.
340 function wfUrlencode( $s ) {
343 if ( is_null( $s ) ) {
348 if ( is_null( $needle ) ) {
349 $needle = [ '%3B', '%40', '%24', '%21', '%2A', '%28', '%29', '%2C', '%2F', '%7E' ];
350 if ( !isset( $_SERVER['SERVER_SOFTWARE'] ) ||
351 ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7' ) === false )
357 $s = urlencode( $s );
360 [ ';', '@', '$', '!', '*', '(', ')', ',', '/', '~', ':' ],
368 * This function takes one or two arrays as input, and returns a CGI-style string, e.g.
369 * "days=7&limit=100". Options in the first array override options in the second.
370 * Options set to null or false will not be output.
372 * @param array $array1 ( String|Array )
373 * @param array|null $array2 ( String|Array )
374 * @param string $prefix
377 function wfArrayToCgi( $array1, $array2 = null, $prefix = '' ) {
378 if ( !is_null( $array2 ) ) {
379 $array1 = $array1 +
$array2;
383 foreach ( $array1 as $key => $value ) {
384 if ( !is_null( $value ) && $value !== false ) {
388 if ( $prefix !== '' ) {
389 $key = $prefix . "[$key]";
391 if ( is_array( $value ) ) {
393 foreach ( $value as $k => $v ) {
394 $cgi .= $firstTime ?
'' : '&';
395 if ( is_array( $v ) ) {
396 $cgi .= wfArrayToCgi( $v, null, $key . "[$k]" );
398 $cgi .= urlencode( $key . "[$k]" ) . '=' . urlencode( $v );
403 if ( is_object( $value ) ) {
404 $value = $value->__toString();
406 $cgi .= urlencode( $key ) . '=' . urlencode( $value );
414 * This is the logical opposite of wfArrayToCgi(): it accepts a query string as
415 * its argument and returns the same string in array form. This allows compatibility
416 * with legacy functions that accept raw query strings instead of nice
417 * arrays. Of course, keys and values are urldecode()d.
419 * @param string $query Query string
420 * @return string[] Array version of input
422 function wfCgiToArray( $query ) {
423 if ( isset( $query[0] ) && $query[0] == '?' ) {
424 $query = substr( $query, 1 );
426 $bits = explode( '&', $query );
428 foreach ( $bits as $bit ) {
432 if ( strpos( $bit, '=' ) === false ) {
433 // Pieces like &qwerty become 'qwerty' => '' (at least this is what php does)
437 list( $key, $value ) = explode( '=', $bit );
439 $key = urldecode( $key );
440 $value = urldecode( $value );
441 if ( strpos( $key, '[' ) !== false ) {
442 $keys = array_reverse( explode( '[', $key ) );
443 $key = array_pop( $keys );
445 foreach ( $keys as $k ) {
446 $k = substr( $k, 0, -1 );
447 $temp = [ $k => $temp ];
449 if ( isset( $ret[$key] ) ) {
450 $ret[$key] = array_merge( $ret[$key], $temp );
462 * Append a query string to an existing URL, which may or may not already
463 * have query string parameters already. If so, they will be combined.
466 * @param string|string[] $query String or associative array
469 function wfAppendQuery( $url, $query ) {
470 if ( is_array( $query ) ) {
471 $query = wfArrayToCgi( $query );
473 if ( $query != '' ) {
474 // Remove the fragment, if there is one
476 $hashPos = strpos( $url, '#' );
477 if ( $hashPos !== false ) {
478 $fragment = substr( $url, $hashPos );
479 $url = substr( $url, 0, $hashPos );
483 if ( false === strpos( $url, '?' ) ) {
490 // Put the fragment back
491 if ( $fragment !== false ) {
499 * Expand a potentially local URL to a fully-qualified URL. Assumes $wgServer
502 * The meaning of the PROTO_* constants is as follows:
503 * PROTO_HTTP: Output a URL starting with http://
504 * PROTO_HTTPS: Output a URL starting with https://
505 * PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL)
506 * PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending
507 * on which protocol was used for the current incoming request
508 * PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer.
509 * For protocol-relative URLs, use the protocol of $wgCanonicalServer
510 * PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer
512 * @todo this won't work with current-path-relative URLs
513 * like "subdir/foo.html", etc.
515 * @param string $url Either fully-qualified or a local path + query
516 * @param string|int|null $defaultProto One of the PROTO_* constants. Determines the
517 * protocol to use if $url or $wgServer is protocol-relative
518 * @return string|false Fully-qualified URL, current-path-relative URL or false if
519 * no valid URL can be constructed
521 function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT
) {
522 global $wgServer, $wgCanonicalServer, $wgInternalServer, $wgRequest,
524 if ( $defaultProto === PROTO_CANONICAL
) {
525 $serverUrl = $wgCanonicalServer;
526 } elseif ( $defaultProto === PROTO_INTERNAL
&& $wgInternalServer !== false ) {
527 // Make $wgInternalServer fall back to $wgServer if not set
528 $serverUrl = $wgInternalServer;
530 $serverUrl = $wgServer;
531 if ( $defaultProto === PROTO_CURRENT
) {
532 $defaultProto = $wgRequest->getProtocol() . '://';
536 // Analyze $serverUrl to obtain its protocol
537 $bits = wfParseUrl( $serverUrl );
538 $serverHasProto = $bits && $bits['scheme'] != '';
540 if ( $defaultProto === PROTO_CANONICAL ||
$defaultProto === PROTO_INTERNAL
) {
541 if ( $serverHasProto ) {
542 $defaultProto = $bits['scheme'] . '://';
544 // $wgCanonicalServer or $wgInternalServer doesn't have a protocol.
545 // This really isn't supposed to happen. Fall back to HTTP in this
547 $defaultProto = PROTO_HTTP
;
551 $defaultProtoWithoutSlashes = substr( $defaultProto, 0, -2 );
553 if ( substr( $url, 0, 2 ) == '//' ) {
554 $url = $defaultProtoWithoutSlashes . $url;
555 } elseif ( substr( $url, 0, 1 ) == '/' ) {
556 // If $serverUrl is protocol-relative, prepend $defaultProtoWithoutSlashes,
557 // otherwise leave it alone.
558 $url = ( $serverHasProto ?
'' : $defaultProtoWithoutSlashes ) . $serverUrl . $url;
561 $bits = wfParseUrl( $url );
563 // ensure proper port for HTTPS arrives in URL
564 // https://phabricator.wikimedia.org/T67184
565 if ( $defaultProto === PROTO_HTTPS
&& $wgHttpsPort != 443 ) {
566 $bits['port'] = $wgHttpsPort;
569 if ( $bits && isset( $bits['path'] ) ) {
570 $bits['path'] = wfRemoveDotSegments( $bits['path'] );
571 return wfAssembleUrl( $bits );
575 } elseif ( substr( $url, 0, 1 ) != '/' ) {
576 # URL is a relative path
577 return wfRemoveDotSegments( $url );
580 # Expanded URL is not valid.
585 * This function will reassemble a URL parsed with wfParseURL. This is useful
586 * if you need to edit part of a URL and put it back together.
588 * This is the basic structure used (brackets contain keys for $urlParts):
589 * [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment]
591 * @todo Need to integrate this into wfExpandUrl (see T34168)
594 * @param array $urlParts URL parts, as output from wfParseUrl
595 * @return string URL assembled from its component parts
597 function wfAssembleUrl( $urlParts ) {
600 if ( isset( $urlParts['delimiter'] ) ) {
601 if ( isset( $urlParts['scheme'] ) ) {
602 $result .= $urlParts['scheme'];
605 $result .= $urlParts['delimiter'];
608 if ( isset( $urlParts['host'] ) ) {
609 if ( isset( $urlParts['user'] ) ) {
610 $result .= $urlParts['user'];
611 if ( isset( $urlParts['pass'] ) ) {
612 $result .= ':' . $urlParts['pass'];
617 $result .= $urlParts['host'];
619 if ( isset( $urlParts['port'] ) ) {
620 $result .= ':' . $urlParts['port'];
624 if ( isset( $urlParts['path'] ) ) {
625 $result .= $urlParts['path'];
628 if ( isset( $urlParts['query'] ) ) {
629 $result .= '?' . $urlParts['query'];
632 if ( isset( $urlParts['fragment'] ) ) {
633 $result .= '#' . $urlParts['fragment'];
640 * Remove all dot-segments in the provided URL path. For example,
641 * '/a/./b/../c/' becomes '/a/c/'. For details on the algorithm, please see
642 * RFC3986 section 5.2.4.
644 * @todo Need to integrate this into wfExpandUrl (see T34168)
648 * @param string $urlPath URL path, potentially containing dot-segments
649 * @return string URL path with all dot-segments removed
651 function wfRemoveDotSegments( $urlPath ) {
654 $inputLength = strlen( $urlPath );
656 while ( $inputOffset < $inputLength ) {
657 $prefixLengthOne = substr( $urlPath, $inputOffset, 1 );
658 $prefixLengthTwo = substr( $urlPath, $inputOffset, 2 );
659 $prefixLengthThree = substr( $urlPath, $inputOffset, 3 );
660 $prefixLengthFour = substr( $urlPath, $inputOffset, 4 );
663 if ( $prefixLengthTwo == './' ) {
664 # Step A, remove leading "./"
666 } elseif ( $prefixLengthThree == '../' ) {
667 # Step A, remove leading "../"
669 } elseif ( ( $prefixLengthTwo == '/.' ) && ( $inputOffset +
2 == $inputLength ) ) {
670 # Step B, replace leading "/.$" with "/"
672 $urlPath[$inputOffset] = '/';
673 } elseif ( $prefixLengthThree == '/./' ) {
674 # Step B, replace leading "/./" with "/"
676 } elseif ( $prefixLengthThree == '/..' && ( $inputOffset +
3 == $inputLength ) ) {
677 # Step C, replace leading "/..$" with "/" and
678 # remove last path component in output
680 $urlPath[$inputOffset] = '/';
682 } elseif ( $prefixLengthFour == '/../' ) {
683 # Step C, replace leading "/../" with "/" and
684 # remove last path component in output
687 } elseif ( ( $prefixLengthOne == '.' ) && ( $inputOffset +
1 == $inputLength ) ) {
688 # Step D, remove "^.$"
690 } elseif ( ( $prefixLengthTwo == '..' ) && ( $inputOffset +
2 == $inputLength ) ) {
691 # Step D, remove "^..$"
694 # Step E, move leading path segment to output
695 if ( $prefixLengthOne == '/' ) {
696 $slashPos = strpos( $urlPath, '/', $inputOffset +
1 );
698 $slashPos = strpos( $urlPath, '/', $inputOffset );
700 if ( $slashPos === false ) {
701 $output .= substr( $urlPath, $inputOffset );
702 $inputOffset = $inputLength;
704 $output .= substr( $urlPath, $inputOffset, $slashPos - $inputOffset );
705 $inputOffset +
= $slashPos - $inputOffset;
710 $slashPos = strrpos( $output, '/' );
711 if ( $slashPos === false ) {
714 $output = substr( $output, 0, $slashPos );
723 * Returns a regular expression of url protocols
725 * @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list.
726 * DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead
729 function wfUrlProtocols( $includeProtocolRelative = true ) {
730 global $wgUrlProtocols;
732 // Cache return values separately based on $includeProtocolRelative
733 static $withProtRel = null, $withoutProtRel = null;
734 $cachedValue = $includeProtocolRelative ?
$withProtRel : $withoutProtRel;
735 if ( !is_null( $cachedValue ) ) {
739 // Support old-style $wgUrlProtocols strings, for backwards compatibility
740 // with LocalSettings files from 1.5
741 if ( is_array( $wgUrlProtocols ) ) {
743 foreach ( $wgUrlProtocols as $protocol ) {
744 // Filter out '//' if !$includeProtocolRelative
745 if ( $includeProtocolRelative ||
$protocol !== '//' ) {
746 $protocols[] = preg_quote( $protocol, '/' );
750 $retval = implode( '|', $protocols );
752 // Ignore $includeProtocolRelative in this case
753 // This case exists for pre-1.6 compatibility, and we can safely assume
754 // that '//' won't appear in a pre-1.6 config because protocol-relative
755 // URLs weren't supported until 1.18
756 $retval = $wgUrlProtocols;
759 // Cache return value
760 if ( $includeProtocolRelative ) {
761 $withProtRel = $retval;
763 $withoutProtRel = $retval;
769 * Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if
770 * you need a regex that matches all URL protocols but does not match protocol-
774 function wfUrlProtocolsWithoutProtRel() {
775 return wfUrlProtocols( false );
779 * parse_url() work-alike, but non-broken. Differences:
781 * 1) Does not raise warnings on bad URLs (just returns false).
782 * 2) Handles protocols that don't use :// (e.g., mailto: and news:, as well as
783 * protocol-relative URLs) correctly.
784 * 3) Adds a "delimiter" element to the array (see (2)).
785 * 4) Verifies that the protocol is on the $wgUrlProtocols whitelist.
786 * 5) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with
787 * a line feed character.
789 * @param string $url A URL to parse
790 * @return string[]|bool Bits of the URL in an associative array, or false on failure.
792 * - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can
793 * be an empty string for protocol-relative URLs.
794 * - delimiter: either '://', ':' or '//'. Always present.
795 * - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs.
796 * - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/
797 * Missing when there is no username.
798 * - pass: password, same as above.
799 * - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com')
800 * - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing.
801 * - fragment: the part after #, can be missing.
803 function wfParseUrl( $url ) {
804 global $wgUrlProtocols; // Allow all protocols defined in DefaultSettings/LocalSettings.php
806 // Protocol-relative URLs are handled really badly by parse_url(). It's so
807 // bad that the easiest way to handle them is to just prepend 'http:' and
808 // strip the protocol out later.
809 $wasRelative = substr( $url, 0, 2 ) == '//';
810 if ( $wasRelative ) {
813 Wikimedia\
suppressWarnings();
814 $bits = parse_url( $url );
815 Wikimedia\restoreWarnings
();
816 // parse_url() returns an array without scheme for some invalid URLs, e.g.
817 // parse_url("%0Ahttp://example.com") == [ 'host' => '%0Ahttp', 'path' => 'example.com' ]
818 if ( !$bits ||
!isset( $bits['scheme'] ) ) {
822 // parse_url() incorrectly handles schemes case-sensitively. Convert it to lowercase.
823 $bits['scheme'] = strtolower( $bits['scheme'] );
825 // most of the protocols are followed by ://, but mailto: and sometimes news: not, check for it
826 if ( in_array( $bits['scheme'] . '://', $wgUrlProtocols ) ) {
827 $bits['delimiter'] = '://';
828 } elseif ( in_array( $bits['scheme'] . ':', $wgUrlProtocols ) ) {
829 $bits['delimiter'] = ':';
830 // parse_url detects for news: and mailto: the host part of an url as path
831 // We have to correct this wrong detection
832 if ( isset( $bits['path'] ) ) {
833 $bits['host'] = $bits['path'];
840 /* Provide an empty host for eg. file:/// urls (see T30627) */
841 if ( !isset( $bits['host'] ) ) {
845 if ( isset( $bits['path'] ) ) {
846 /* parse_url loses the third / for file:///c:/ urls (but not on variants) */
847 if ( substr( $bits['path'], 0, 1 ) !== '/' ) {
848 $bits['path'] = '/' . $bits['path'];
855 // If the URL was protocol-relative, fix scheme and delimiter
856 if ( $wasRelative ) {
857 $bits['scheme'] = '';
858 $bits['delimiter'] = '//';
864 * Take a URL, make sure it's expanded to fully qualified, and replace any
865 * encoded non-ASCII Unicode characters with their UTF-8 original forms
866 * for more compact display and legibility for local audiences.
868 * @todo handle punycode domains too
873 function wfExpandIRI( $url ) {
874 return preg_replace_callback(
875 '/((?:%[89A-F][0-9A-F])+)/i',
876 'wfExpandIRI_callback',
882 * Private callback for wfExpandIRI
883 * @param array $matches
886 function wfExpandIRI_callback( $matches ) {
887 return urldecode( $matches[1] );
891 * Make URL indexes, appropriate for the el_index field of externallinks.
896 function wfMakeUrlIndexes( $url ) {
897 $bits = wfParseUrl( $url );
899 // Reverse the labels in the hostname, convert to lower case
900 // For emails reverse domainpart only
901 if ( $bits['scheme'] == 'mailto' ) {
902 $mailparts = explode( '@', $bits['host'], 2 );
903 if ( count( $mailparts ) === 2 ) {
904 $domainpart = strtolower( implode( '.', array_reverse( explode( '.', $mailparts[1] ) ) ) );
906 // No domain specified, don't mangle it
909 $reversedHost = $domainpart . '@' . $mailparts[0];
911 $reversedHost = strtolower( implode( '.', array_reverse( explode( '.', $bits['host'] ) ) ) );
913 // Add an extra dot to the end
914 // Why? Is it in wrong place in mailto links?
915 if ( substr( $reversedHost, -1, 1 ) !== '.' ) {
916 $reversedHost .= '.';
918 // Reconstruct the pseudo-URL
919 $prot = $bits['scheme'];
920 $index = $prot . $bits['delimiter'] . $reversedHost;
921 // Leave out user and password. Add the port, path, query and fragment
922 if ( isset( $bits['port'] ) ) {
923 $index .= ':' . $bits['port'];
925 if ( isset( $bits['path'] ) ) {
926 $index .= $bits['path'];
930 if ( isset( $bits['query'] ) ) {
931 $index .= '?' . $bits['query'];
933 if ( isset( $bits['fragment'] ) ) {
934 $index .= '#' . $bits['fragment'];
938 return [ "http:$index", "https:$index" ];
945 * Check whether a given URL has a domain that occurs in a given set of domains
947 * @param array $domains Array of domains (strings)
948 * @return bool True if the host part of $url ends in one of the strings in $domains
950 function wfMatchesDomainList( $url, $domains ) {
951 $bits = wfParseUrl( $url );
952 if ( is_array( $bits ) && isset( $bits['host'] ) ) {
953 $host = '.' . $bits['host'];
954 foreach ( (array)$domains as $domain ) {
955 $domain = '.' . $domain;
956 if ( substr( $host, -strlen( $domain ) ) === $domain ) {
965 * Sends a line to the debug log if enabled or, optionally, to a comment in output.
966 * In normal operation this is a NOP.
968 * Controlling globals:
969 * $wgDebugLogFile - points to the log file
970 * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
971 * $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
973 * @since 1.25 support for additional context data
975 * @param string $text
976 * @param string|bool $dest Destination of the message:
977 * - 'all': both to the log and HTML (debug toolbar or HTML comments)
978 * - 'private': excluded from HTML output
979 * For backward compatibility, it can also take a boolean:
980 * - true: same as 'all'
981 * - false: same as 'private'
982 * @param array $context Additional logging context data
984 function wfDebug( $text, $dest = 'all', array $context = [] ) {
985 global $wgDebugRawPage, $wgDebugLogPrefix;
986 global $wgDebugTimestamps;
988 if ( !$wgDebugRawPage && wfIsDebugRawPage() ) {
992 $text = trim( $text );
994 if ( $wgDebugTimestamps ) {
995 $context['seconds_elapsed'] = sprintf(
997 microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT']
999 $context['memory_used'] = sprintf(
1001 ( memory_get_usage( true ) / ( 1024 * 1024 ) )
1005 if ( $wgDebugLogPrefix !== '' ) {
1006 $context['prefix'] = $wgDebugLogPrefix;
1008 $context['private'] = ( $dest === false ||
$dest === 'private' );
1010 $logger = LoggerFactory
::getInstance( 'wfDebug' );
1011 $logger->debug( $text, $context );
1015 * Returns true if debug logging should be suppressed if $wgDebugRawPage = false
1018 function wfIsDebugRawPage() {
1020 if ( $cache !== null ) {
1023 // Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
1024 // phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals
1025 if ( ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' )
1027 isset( $_SERVER['SCRIPT_NAME'] )
1028 && substr( $_SERVER['SCRIPT_NAME'], -8 ) == 'load.php'
1039 * Send a line giving PHP memory usage.
1041 * @param bool $exact Print exact byte values instead of kibibytes (default: false)
1043 function wfDebugMem( $exact = false ) {
1044 $mem = memory_get_usage();
1046 $mem = floor( $mem / 1024 ) . ' KiB';
1050 wfDebug( "Memory usage: $mem\n" );
1054 * Send a line to a supplementary debug log file, if configured, or main debug
1057 * To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to
1058 * a string filename or an associative array mapping 'destination' to the
1059 * desired filename. The associative array may also contain a 'sample' key
1060 * with an integer value, specifying a sampling factor. Sampled log events
1061 * will be emitted with a 1 in N random chance.
1063 * @since 1.23 support for sampling log messages via $wgDebugLogGroups.
1064 * @since 1.25 support for additional context data
1065 * @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi
1067 * @param string $logGroup
1068 * @param string $text
1069 * @param string|bool $dest Destination of the message:
1070 * - 'all': both to the log and HTML (debug toolbar or HTML comments)
1071 * - 'private': only to the specific log if set in $wgDebugLogGroups and
1072 * discarded otherwise
1073 * For backward compatibility, it can also take a boolean:
1074 * - true: same as 'all'
1075 * - false: same as 'private'
1076 * @param array $context Additional logging context data
1078 function wfDebugLog(
1079 $logGroup, $text, $dest = 'all', array $context = []
1081 $text = trim( $text );
1083 $logger = LoggerFactory
::getInstance( $logGroup );
1084 $context['private'] = ( $dest === false ||
$dest === 'private' );
1085 $logger->info( $text, $context );
1089 * Log for database errors
1091 * @since 1.25 support for additional context data
1093 * @param string $text Database error message.
1094 * @param array $context Additional logging context data
1096 function wfLogDBError( $text, array $context = [] ) {
1097 $logger = LoggerFactory
::getInstance( 'wfLogDBError' );
1098 $logger->error( trim( $text ), $context );
1102 * Throws a warning that $function is deprecated
1104 * @param string $function
1105 * @param string|bool $version Version of MediaWiki that the function
1106 * was deprecated in (Added in 1.19).
1107 * @param string|bool $component Added in 1.19.
1108 * @param int $callerOffset How far up the call stack is the original
1109 * caller. 2 = function that called the function that called
1110 * wfDeprecated (Added in 1.20)
1114 function wfDeprecated( $function, $version = false, $component = false, $callerOffset = 2 ) {
1115 MWDebug
::deprecated( $function, $version, $component, $callerOffset +
1 );
1119 * Send a warning either to the debug log or in a PHP error depending on
1120 * $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead.
1122 * @param string $msg Message to send
1123 * @param int $callerOffset Number of items to go back in the backtrace to
1124 * find the correct caller (1 = function calling wfWarn, ...)
1125 * @param int $level PHP error level; defaults to E_USER_NOTICE;
1126 * only used when $wgDevelopmentWarnings is true
1128 function wfWarn( $msg, $callerOffset = 1, $level = E_USER_NOTICE
) {
1129 MWDebug
::warning( $msg, $callerOffset +
1, $level, 'auto' );
1133 * Send a warning as a PHP error and the debug log. This is intended for logging
1134 * warnings in production. For logging development warnings, use WfWarn instead.
1136 * @param string $msg Message to send
1137 * @param int $callerOffset Number of items to go back in the backtrace to
1138 * find the correct caller (1 = function calling wfLogWarning, ...)
1139 * @param int $level PHP error level; defaults to E_USER_WARNING
1141 function wfLogWarning( $msg, $callerOffset = 1, $level = E_USER_WARNING
) {
1142 MWDebug
::warning( $msg, $callerOffset +
1, $level, 'production' );
1146 * Log to a file without getting "file size exceeded" signals.
1148 * Can also log to TCP or UDP with the syntax udp://host:port/prefix. This will
1149 * send lines to the specified port, prefixed by the specified prefix and a space.
1150 * @since 1.25 support for additional context data
1152 * @param string $text
1153 * @param string $file Filename
1154 * @param array $context Additional logging context data
1155 * @throws MWException
1156 * @deprecated since 1.25 Use \MediaWiki\Logger\LegacyLogger::emit or UDPTransport
1158 function wfErrorLog( $text, $file, array $context = [] ) {
1159 wfDeprecated( __METHOD__
, '1.25' );
1160 $logger = LoggerFactory
::getInstance( 'wfErrorLog' );
1161 $context['destination'] = $file;
1162 $logger->info( trim( $text ), $context );
1167 * @todo Move logic to MediaWiki.php
1169 function wfLogProfilingData() {
1170 global $wgDebugLogGroups, $wgDebugRawPage;
1172 $context = RequestContext
::getMain();
1173 $request = $context->getRequest();
1175 $profiler = Profiler
::instance();
1176 $profiler->setContext( $context );
1177 $profiler->logData();
1179 // Send out any buffered statsd metrics as needed
1180 MediaWiki
::emitBufferedStatsdData(
1181 MediaWikiServices
::getInstance()->getStatsdDataFactory(),
1182 $context->getConfig()
1185 // Profiling must actually be enabled...
1186 if ( $profiler instanceof ProfilerStub
) {
1190 if ( isset( $wgDebugLogGroups['profileoutput'] )
1191 && $wgDebugLogGroups['profileoutput'] === false
1193 // Explicitly disabled
1196 if ( !$wgDebugRawPage && wfIsDebugRawPage() ) {
1200 $ctx = [ 'elapsed' => $request->getElapsedTime() ];
1201 if ( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
1202 $ctx['forwarded_for'] = $_SERVER['HTTP_X_FORWARDED_FOR'];
1204 if ( !empty( $_SERVER['HTTP_CLIENT_IP'] ) ) {
1205 $ctx['client_ip'] = $_SERVER['HTTP_CLIENT_IP'];
1207 if ( !empty( $_SERVER['HTTP_FROM'] ) ) {
1208 $ctx['from'] = $_SERVER['HTTP_FROM'];
1210 if ( isset( $ctx['forwarded_for'] ) ||
1211 isset( $ctx['client_ip'] ) ||
1212 isset( $ctx['from'] ) ) {
1213 $ctx['proxy'] = $_SERVER['REMOTE_ADDR'];
1216 // Don't load $wgUser at this late stage just for statistics purposes
1217 // @todo FIXME: We can detect some anons even if it is not loaded.
1218 // See User::getId()
1219 $user = $context->getUser();
1220 $ctx['anon'] = $user->isItemLoaded( 'id' ) && $user->isAnon();
1222 // Command line script uses a FauxRequest object which does not have
1223 // any knowledge about an URL and throw an exception instead.
1225 $ctx['url'] = urldecode( $request->getRequestURL() );
1226 } catch ( Exception
$ignored ) {
1230 $ctx['output'] = $profiler->getOutput();
1232 $log = LoggerFactory
::getInstance( 'profileoutput' );
1233 $log->info( "Elapsed: {elapsed}; URL: <{url}>\n{output}", $ctx );
1237 * Increment a statistics counter
1239 * @param string $key
1243 function wfIncrStats( $key, $count = 1 ) {
1244 $stats = MediaWikiServices
::getInstance()->getStatsdDataFactory();
1245 $stats->updateCount( $key, $count );
1249 * Check whether the wiki is in read-only mode.
1253 function wfReadOnly() {
1254 return MediaWikiServices
::getInstance()->getReadOnlyMode()
1259 * Check if the site is in read-only mode and return the message if so
1261 * This checks wfConfiguredReadOnlyReason() and the main load balancer
1262 * for replica DB lag. This may result in DB connection being made.
1264 * @return string|bool String when in read-only mode; false otherwise
1266 function wfReadOnlyReason() {
1267 return MediaWikiServices
::getInstance()->getReadOnlyMode()
1272 * Get the value of $wgReadOnly or the contents of $wgReadOnlyFile.
1274 * @return string|bool String when in read-only mode; false otherwise
1277 function wfConfiguredReadOnlyReason() {
1278 return MediaWikiServices
::getInstance()->getConfiguredReadOnlyMode()
1283 * Return a Language object from $langcode
1285 * @param Language|string|bool $langcode Either:
1286 * - a Language object
1287 * - code of the language to get the message for, if it is
1288 * a valid code create a language for that language, if
1289 * it is a string but not a valid code then make a basic
1291 * - a boolean: if it's false then use the global object for
1292 * the current user's language (as a fallback for the old parameter
1293 * functionality), or if it is true then use global object
1294 * for the wiki's content language.
1297 function wfGetLangObj( $langcode = false ) {
1298 # Identify which language to get or create a language object for.
1299 # Using is_object here due to Stub objects.
1300 if ( is_object( $langcode ) ) {
1301 # Great, we already have the object (hopefully)!
1305 global $wgContLang, $wgLanguageCode;
1306 if ( $langcode === true ||
$langcode === $wgLanguageCode ) {
1307 # $langcode is the language code of the wikis content language object.
1308 # or it is a boolean and value is true
1313 if ( $langcode === false ||
$langcode === $wgLang->getCode() ) {
1314 # $langcode is the language code of user language object.
1315 # or it was a boolean and value is false
1319 $validCodes = array_keys( Language
::fetchLanguageNames() );
1320 if ( in_array( $langcode, $validCodes ) ) {
1321 # $langcode corresponds to a valid language.
1322 return Language
::factory( $langcode );
1325 # $langcode is a string, but not a valid language code; use content language.
1326 wfDebug( "Invalid language code passed to wfGetLangObj, falling back to content language.\n" );
1331 * This is the function for getting translated interface messages.
1333 * @see Message class for documentation how to use them.
1334 * @see https://www.mediawiki.org/wiki/Manual:Messages_API
1336 * This function replaces all old wfMsg* functions.
1338 * @param string|string[]|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier
1339 * @param string|string[] ...$params Normal message parameters
1344 * @see Message::__construct
1346 function wfMessage( $key, ...$params ) {
1347 $message = new Message( $key );
1349 // We call Message::params() to reduce code duplication
1351 $message->params( ...$params );
1358 * This function accepts multiple message keys and returns a message instance
1359 * for the first message which is non-empty. If all messages are empty then an
1360 * instance of the first message key is returned.
1362 * @param string ...$keys Message keys
1367 * @see Message::newFallbackSequence
1369 function wfMessageFallback( ...$keys ) {
1370 return Message
::newFallbackSequence( ...$keys );
1374 * Replace message parameter keys on the given formatted output.
1376 * @param string $message
1377 * @param array $args
1381 function wfMsgReplaceArgs( $message, $args ) {
1382 # Fix windows line-endings
1383 # Some messages are split with explode("\n", $msg)
1384 $message = str_replace( "\r", '', $message );
1386 // Replace arguments
1387 if ( is_array( $args ) && $args ) {
1388 if ( is_array( $args[0] ) ) {
1389 $args = array_values( $args[0] );
1391 $replacementKeys = [];
1392 foreach ( $args as $n => $param ) {
1393 $replacementKeys['$' . ( $n +
1 )] = $param;
1395 $message = strtr( $message, $replacementKeys );
1402 * Fetch server name for use in error reporting etc.
1403 * Use real server name if available, so we know which machine
1404 * in a server farm generated the current page.
1408 function wfHostname() {
1410 if ( is_null( $host ) ) {
1411 # Hostname overriding
1412 global $wgOverrideHostname;
1413 if ( $wgOverrideHostname !== false ) {
1414 # Set static and skip any detection
1415 $host = $wgOverrideHostname;
1419 if ( function_exists( 'posix_uname' ) ) {
1420 // This function not present on Windows
1421 $uname = posix_uname();
1425 if ( is_array( $uname ) && isset( $uname['nodename'] ) ) {
1426 $host = $uname['nodename'];
1427 } elseif ( getenv( 'COMPUTERNAME' ) ) {
1428 # Windows computer name
1429 $host = getenv( 'COMPUTERNAME' );
1431 # This may be a virtual server.
1432 $host = $_SERVER['SERVER_NAME'];
1439 * Returns a script tag that stores the amount of time it took MediaWiki to
1440 * handle the request in milliseconds as 'wgBackendResponseTime'.
1442 * If $wgShowHostnames is true, the script will also set 'wgHostname' to the
1443 * hostname of the server handling the request.
1445 * @param string $nonce Value from OutputPage::getCSPNonce
1446 * @return string|WrappedString HTML
1448 function wfReportTime( $nonce = null ) {
1449 global $wgShowHostnames;
1451 $elapsed = ( microtime( true ) - $_SERVER['REQUEST_TIME_FLOAT'] );
1452 // seconds to milliseconds
1453 $responseTime = round( $elapsed * 1000 );
1454 $reportVars = [ 'wgBackendResponseTime' => $responseTime ];
1455 if ( $wgShowHostnames ) {
1456 $reportVars['wgHostname'] = wfHostname();
1458 return Skin
::makeVariablesScript( $reportVars, $nonce );
1462 * Safety wrapper for debug_backtrace().
1464 * Will return an empty array if debug_backtrace is disabled, otherwise
1465 * the output from debug_backtrace() (trimmed).
1467 * @param int $limit This parameter can be used to limit the number of stack frames returned
1469 * @return array Array of backtrace information
1471 function wfDebugBacktrace( $limit = 0 ) {
1472 static $disabled = null;
1474 if ( is_null( $disabled ) ) {
1475 $disabled = !function_exists( 'debug_backtrace' );
1477 wfDebug( "debug_backtrace() is disabled\n" );
1485 return array_slice( debug_backtrace( DEBUG_BACKTRACE_PROVIDE_OBJECT
, $limit +
1 ), 1 );
1487 return array_slice( debug_backtrace(), 1 );
1492 * Get a debug backtrace as a string
1494 * @param bool|null $raw If true, the return value is plain text. If false, HTML.
1495 * Defaults to $wgCommandLineMode if unset.
1497 * @since 1.25 Supports $raw parameter.
1499 function wfBacktrace( $raw = null ) {
1500 global $wgCommandLineMode;
1502 if ( $raw === null ) {
1503 $raw = $wgCommandLineMode;
1507 $frameFormat = "%s line %s calls %s()\n";
1508 $traceFormat = "%s";
1510 $frameFormat = "<li>%s line %s calls %s()</li>\n";
1511 $traceFormat = "<ul>\n%s</ul>\n";
1514 $frames = array_map( function ( $frame ) use ( $frameFormat ) {
1515 $file = !empty( $frame['file'] ) ?
basename( $frame['file'] ) : '-';
1516 $line = $frame['line'] ??
'-';
1517 $call = $frame['function'];
1518 if ( !empty( $frame['class'] ) ) {
1519 $call = $frame['class'] . $frame['type'] . $call;
1521 return sprintf( $frameFormat, $file, $line, $call );
1522 }, wfDebugBacktrace() );
1524 return sprintf( $traceFormat, implode( '', $frames ) );
1528 * Get the name of the function which called this function
1529 * wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__)
1530 * wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller()
1531 * wfGetCaller( 3 ) is the parent of that.
1536 function wfGetCaller( $level = 2 ) {
1537 $backtrace = wfDebugBacktrace( $level +
1 );
1538 if ( isset( $backtrace[$level] ) ) {
1539 return wfFormatStackFrame( $backtrace[$level] );
1546 * Return a string consisting of callers in the stack. Useful sometimes
1547 * for profiling specific points.
1549 * @param int $limit The maximum depth of the stack frame to return, or false for the entire stack.
1552 function wfGetAllCallers( $limit = 3 ) {
1553 $trace = array_reverse( wfDebugBacktrace() );
1554 if ( !$limit ||
$limit > count( $trace ) - 1 ) {
1555 $limit = count( $trace ) - 1;
1557 $trace = array_slice( $trace, -$limit - 1, $limit );
1558 return implode( '/', array_map( 'wfFormatStackFrame', $trace ) );
1562 * Return a string representation of frame
1564 * @param array $frame
1567 function wfFormatStackFrame( $frame ) {
1568 if ( !isset( $frame['function'] ) ) {
1569 return 'NO_FUNCTION_GIVEN';
1571 return isset( $frame['class'] ) && isset( $frame['type'] ) ?
1572 $frame['class'] . $frame['type'] . $frame['function'] :
1576 /* Some generic result counters, pulled out of SearchEngine */
1581 * @param int $offset
1585 function wfShowingResults( $offset, $limit ) {
1586 return wfMessage( 'showingresults' )->numParams( $limit, $offset +
1 )->parse();
1590 * Whether the client accept gzip encoding
1592 * Uses the Accept-Encoding header to check if the client supports gzip encoding.
1593 * Use this when considering to send a gzip-encoded response to the client.
1595 * @param bool $force Forces another check even if we already have a cached result.
1598 function wfClientAcceptsGzip( $force = false ) {
1599 static $result = null;
1600 if ( $result === null ||
$force ) {
1602 if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
1603 # @todo FIXME: We may want to blacklist some broken browsers
1606 '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
1607 $_SERVER['HTTP_ACCEPT_ENCODING'],
1611 if ( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) {
1615 wfDebug( "wfClientAcceptsGzip: client accepts gzip.\n" );
1624 * Escapes the given text so that it may be output using addWikiText()
1625 * without any linking, formatting, etc. making its way through. This
1626 * is achieved by substituting certain characters with HTML entities.
1627 * As required by the callers, "<nowiki>" is not used.
1629 * @param string $text Text to be escaped
1632 function wfEscapeWikiText( $text ) {
1633 global $wgEnableMagicLinks;
1634 static $repl = null, $repl2 = null;
1635 if ( $repl === null ||
defined( 'MW_PARSER_TEST' ) ||
defined( 'MW_PHPUNIT_TEST' ) ) {
1636 // Tests depend upon being able to change $wgEnableMagicLinks, so don't cache
1637 // in those situations
1639 '"' => '"', '&' => '&', "'" => ''', '<' => '<',
1640 '=' => '=', '>' => '>', '[' => '[', ']' => ']',
1641 '{' => '{', '|' => '|', '}' => '}', ';' => ';',
1642 "\n#" => "\n#", "\r#" => "\r#",
1643 "\n*" => "\n*", "\r*" => "\r*",
1644 "\n:" => "\n:", "\r:" => "\r:",
1645 "\n " => "\n ", "\r " => "\r ",
1646 "\n\n" => "\n ", "\r\n" => " \n",
1647 "\n\r" => "\n ", "\r\r" => "\r ",
1648 "\n\t" => "\n	", "\r\t" => "\r	", // "\n\t\n" is treated like "\n\n"
1649 "\n----" => "\n----", "\r----" => "\r----",
1650 '__' => '__', '://' => '://',
1653 $magicLinks = array_keys( array_filter( $wgEnableMagicLinks ) );
1654 // We have to catch everything "\s" matches in PCRE
1655 foreach ( $magicLinks as $magic ) {
1656 $repl["$magic "] = "$magic ";
1657 $repl["$magic\t"] = "$magic	";
1658 $repl["$magic\r"] = "$magic ";
1659 $repl["$magic\n"] = "$magic ";
1660 $repl["$magic\f"] = "$magic";
1663 // And handle protocols that don't use "://"
1664 global $wgUrlProtocols;
1666 foreach ( $wgUrlProtocols as $prot ) {
1667 if ( substr( $prot, -1 ) === ':' ) {
1668 $repl2[] = preg_quote( substr( $prot, 0, -1 ), '/' );
1671 $repl2 = $repl2 ?
'/\b(' . implode( '|', $repl2 ) . '):/i' : '/^(?!)/';
1673 $text = substr( strtr( "\n$text", $repl ), 1 );
1674 $text = preg_replace( $repl2, '$1:', $text );
1679 * Sets dest to source and returns the original value of dest
1680 * If source is NULL, it just returns the value, it doesn't set the variable
1681 * If force is true, it will set the value even if source is NULL
1683 * @param mixed &$dest
1684 * @param mixed $source
1685 * @param bool $force
1688 function wfSetVar( &$dest, $source, $force = false ) {
1690 if ( !is_null( $source ) ||
$force ) {
1697 * As for wfSetVar except setting a bit
1701 * @param bool $state
1705 function wfSetBit( &$dest, $bit, $state = true ) {
1706 $temp = (bool)( $dest & $bit );
1707 if ( !is_null( $state ) ) {
1718 * A wrapper around the PHP function var_export().
1719 * Either print it or add it to the regular output ($wgOut).
1721 * @param mixed $var A PHP variable to dump.
1723 function wfVarDump( $var ) {
1725 $s = str_replace( "\n", "<br />\n", var_export( $var, true ) . "\n" );
1726 if ( headers_sent() ||
!isset( $wgOut ) ||
!is_object( $wgOut ) ) {
1729 $wgOut->addHTML( $s );
1734 * Provide a simple HTTP error.
1736 * @param int|string $code
1737 * @param string $label
1738 * @param string $desc
1740 function wfHttpError( $code, $label, $desc ) {
1742 HttpStatus
::header( $code );
1745 $wgOut->sendCacheControl();
1748 MediaWiki\HeaderCallback
::warnIfHeadersSent();
1749 header( 'Content-type: text/html; charset=utf-8' );
1750 print '<!DOCTYPE html>' .
1751 '<html><head><title>' .
1752 htmlspecialchars( $label ) .
1753 '</title></head><body><h1>' .
1754 htmlspecialchars( $label ) .
1756 nl2br( htmlspecialchars( $desc ) ) .
1757 "</p></body></html>\n";
1761 * Clear away any user-level output buffers, discarding contents.
1763 * Suitable for 'starting afresh', for instance when streaming
1764 * relatively large amounts of data without buffering, or wanting to
1765 * output image files without ob_gzhandler's compression.
1767 * The optional $resetGzipEncoding parameter controls suppression of
1768 * the Content-Encoding header sent by ob_gzhandler; by default it
1769 * is left. See comments for wfClearOutputBuffers() for why it would
1772 * Note that some PHP configuration options may add output buffer
1773 * layers which cannot be removed; these are left in place.
1775 * @param bool $resetGzipEncoding
1777 function wfResetOutputBuffers( $resetGzipEncoding = true ) {
1778 if ( $resetGzipEncoding ) {
1779 // Suppress Content-Encoding and Content-Length
1780 // headers from OutputHandler::handle.
1781 global $wgDisableOutputCompression;
1782 $wgDisableOutputCompression = true;
1784 while ( $status = ob_get_status() ) {
1785 if ( isset( $status['flags'] ) ) {
1786 $flags = PHP_OUTPUT_HANDLER_CLEANABLE | PHP_OUTPUT_HANDLER_REMOVABLE
;
1787 $deleteable = ( $status['flags'] & $flags ) === $flags;
1788 } elseif ( isset( $status['del'] ) ) {
1789 $deleteable = $status['del'];
1791 // Guess that any PHP-internal setting can't be removed.
1792 $deleteable = $status['type'] !== 0; /* PHP_OUTPUT_HANDLER_INTERNAL */
1794 if ( !$deleteable ) {
1795 // Give up, and hope the result doesn't break
1799 if ( $status['name'] === 'MediaWikiTestCase::wfResetOutputBuffersBarrier' ) {
1800 // Unit testing barrier to prevent this function from breaking PHPUnit.
1803 if ( !ob_end_clean() ) {
1804 // Could not remove output buffer handler; abort now
1805 // to avoid getting in some kind of infinite loop.
1808 if ( $resetGzipEncoding ) {
1809 if ( $status['name'] == 'ob_gzhandler' ) {
1810 // Reset the 'Content-Encoding' field set by this handler
1811 // so we can start fresh.
1812 header_remove( 'Content-Encoding' );
1820 * More legible than passing a 'false' parameter to wfResetOutputBuffers():
1822 * Clear away output buffers, but keep the Content-Encoding header
1823 * produced by ob_gzhandler, if any.
1825 * This should be used for HTTP 304 responses, where you need to
1826 * preserve the Content-Encoding header of the real result, but
1827 * also need to suppress the output of ob_gzhandler to keep to spec
1828 * and avoid breaking Firefox in rare cases where the headers and
1829 * body are broken over two packets.
1831 function wfClearOutputBuffers() {
1832 wfResetOutputBuffers( false );
1836 * Converts an Accept-* header into an array mapping string values to quality
1839 * @param string $accept
1840 * @param string $def Default
1841 * @return float[] Associative array of string => float pairs
1843 function wfAcceptToPrefs( $accept, $def = '*/*' ) {
1844 # No arg means accept anything (per HTTP spec)
1846 return [ $def => 1.0 ];
1851 $parts = explode( ',', $accept );
1853 foreach ( $parts as $part ) {
1854 # @todo FIXME: Doesn't deal with params like 'text/html; level=1'
1855 $values = explode( ';', trim( $part ) );
1857 if ( count( $values ) == 1 ) {
1858 $prefs[$values[0]] = 1.0;
1859 } elseif ( preg_match( '/q\s*=\s*(\d*\.\d+)/', $values[1], $match ) ) {
1860 $prefs[$values[0]] = floatval( $match[1] );
1868 * Checks if a given MIME type matches any of the keys in the given
1869 * array. Basic wildcards are accepted in the array keys.
1871 * Returns the matching MIME type (or wildcard) if a match, otherwise
1874 * @param string $type
1875 * @param array $avail
1879 function mimeTypeMatch( $type, $avail ) {
1880 if ( array_key_exists( $type, $avail ) ) {
1883 $mainType = explode( '/', $type )[0];
1884 if ( array_key_exists( "$mainType/*", $avail ) ) {
1885 return "$mainType/*";
1886 } elseif ( array_key_exists( '*/*', $avail ) ) {
1895 * Returns the 'best' match between a client's requested internet media types
1896 * and the server's list of available types. Each list should be an associative
1897 * array of type to preference (preference is a float between 0.0 and 1.0).
1898 * Wildcards in the types are acceptable.
1900 * @param array $cprefs Client's acceptable type list
1901 * @param array $sprefs Server's offered types
1904 * @todo FIXME: Doesn't handle params like 'text/plain; charset=UTF-8'
1905 * XXX: generalize to negotiate other stuff
1907 function wfNegotiateType( $cprefs, $sprefs ) {
1910 foreach ( array_keys( $sprefs ) as $type ) {
1911 $subType = explode( '/', $type )[1];
1912 if ( $subType != '*' ) {
1913 $ckey = mimeTypeMatch( $type, $cprefs );
1915 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1920 foreach ( array_keys( $cprefs ) as $type ) {
1921 $subType = explode( '/', $type )[1];
1922 if ( $subType != '*' && !array_key_exists( $type, $sprefs ) ) {
1923 $skey = mimeTypeMatch( $type, $sprefs );
1925 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1933 foreach ( array_keys( $combine ) as $type ) {
1934 if ( $combine[$type] > $bestq ) {
1936 $bestq = $combine[$type];
1944 * Reference-counted warning suppression
1946 * @deprecated since 1.26, use Wikimedia\suppressWarnings() directly
1949 function wfSuppressWarnings( $end = false ) {
1950 Wikimedia\
suppressWarnings( $end );
1954 * @deprecated since 1.26, use Wikimedia\restoreWarnings() directly
1955 * Restore error level to previous value
1957 function wfRestoreWarnings() {
1958 Wikimedia\restoreWarnings
();
1962 * Get a timestamp string in one of various formats
1964 * @param mixed $outputtype A timestamp in one of the supported formats, the
1965 * function will autodetect which format is supplied and act accordingly.
1966 * @param mixed $ts Optional timestamp to convert, default 0 for the current time
1967 * @return string|bool String / false The same date in the format specified in $outputtype or false
1969 function wfTimestamp( $outputtype = TS_UNIX
, $ts = 0 ) {
1970 $ret = MWTimestamp
::convert( $outputtype, $ts );
1971 if ( $ret === false ) {
1972 wfDebug( "wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts\n" );
1978 * Return a formatted timestamp, or null if input is null.
1979 * For dealing with nullable timestamp columns in the database.
1981 * @param int $outputtype
1985 function wfTimestampOrNull( $outputtype = TS_UNIX
, $ts = null ) {
1986 if ( is_null( $ts ) ) {
1989 return wfTimestamp( $outputtype, $ts );
1994 * Convenience function; returns MediaWiki timestamp for the present time.
1998 function wfTimestampNow() {
2000 return MWTimestamp
::now( TS_MW
);
2004 * Check if the operating system is Windows
2006 * @return bool True if it's Windows, false otherwise.
2008 function wfIsWindows() {
2009 static $isWindows = null;
2010 if ( $isWindows === null ) {
2011 $isWindows = strtoupper( substr( PHP_OS
, 0, 3 ) ) === 'WIN';
2017 * Check if we are running under HHVM
2021 function wfIsHHVM() {
2022 return defined( 'HHVM_VERSION' );
2026 * Check if we are running from the commandline
2031 function wfIsCLI() {
2032 return PHP_SAPI
=== 'cli' || PHP_SAPI
=== 'phpdbg';
2036 * Tries to get the system directory for temporary files. First
2037 * $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP
2038 * environment variables are then checked in sequence, then
2039 * sys_get_temp_dir(), then upload_tmp_dir from php.ini.
2041 * NOTE: When possible, use instead the tmpfile() function to create
2042 * temporary files to avoid race conditions on file creation, etc.
2046 function wfTempDir() {
2047 global $wgTmpDirectory;
2049 if ( $wgTmpDirectory !== false ) {
2050 return $wgTmpDirectory;
2053 return TempFSFile
::getUsableTempDirectory();
2057 * Make directory, and make all parent directories if they don't exist
2059 * @param string $dir Full path to directory to create
2060 * @param int $mode Chmod value to use, default is $wgDirectoryMode
2061 * @param string $caller Optional caller param for debugging.
2062 * @throws MWException
2065 function wfMkdirParents( $dir, $mode = null, $caller = null ) {
2066 global $wgDirectoryMode;
2068 if ( FileBackend
::isStoragePath( $dir ) ) { // sanity
2069 throw new MWException( __FUNCTION__
. " given storage path '$dir'." );
2072 if ( !is_null( $caller ) ) {
2073 wfDebug( "$caller: called wfMkdirParents($dir)\n" );
2076 if ( strval( $dir ) === '' ||
is_dir( $dir ) ) {
2080 $dir = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR
, $dir );
2082 if ( is_null( $mode ) ) {
2083 $mode = $wgDirectoryMode;
2086 // Turn off the normal warning, we're doing our own below
2087 Wikimedia\
suppressWarnings();
2088 $ok = mkdir( $dir, $mode, true ); // PHP5 <3
2089 Wikimedia\restoreWarnings
();
2092 // directory may have been created on another request since we last checked
2093 if ( is_dir( $dir ) ) {
2097 // PHP doesn't report the path in its warning message, so add our own to aid in diagnosis.
2098 wfLogWarning( sprintf( "failed to mkdir \"%s\" mode 0%o", $dir, $mode ) );
2104 * Remove a directory and all its content.
2105 * Does not hide error.
2106 * @param string $dir
2108 function wfRecursiveRemoveDir( $dir ) {
2109 wfDebug( __FUNCTION__
. "( $dir )\n" );
2110 // taken from https://secure.php.net/manual/en/function.rmdir.php#98622
2111 if ( is_dir( $dir ) ) {
2112 $objects = scandir( $dir );
2113 foreach ( $objects as $object ) {
2114 if ( $object != "." && $object != ".." ) {
2115 if ( filetype( $dir . '/' . $object ) == "dir" ) {
2116 wfRecursiveRemoveDir( $dir . '/' . $object );
2118 unlink( $dir . '/' . $object );
2128 * @param int $nr The number to format
2129 * @param int $acc The number of digits after the decimal point, default 2
2130 * @param bool $round Whether or not to round the value, default true
2133 function wfPercent( $nr, $acc = 2, $round = true ) {
2134 $ret = sprintf( "%.${acc}f", $nr );
2135 return $round ?
round( $ret, $acc ) . '%' : "$ret%";
2139 * Safety wrapper around ini_get() for boolean settings.
2140 * The values returned from ini_get() are pre-normalized for settings
2141 * set via php.ini or php_flag/php_admin_flag... but *not*
2142 * for those set via php_value/php_admin_value.
2144 * It's fairly common for people to use php_value instead of php_flag,
2145 * which can leave you with an 'off' setting giving a false positive
2146 * for code that just takes the ini_get() return value as a boolean.
2148 * To make things extra interesting, setting via php_value accepts
2149 * "true" and "yes" as true, but php.ini and php_flag consider them false. :)
2150 * Unrecognized values go false... again opposite PHP's own coercion
2151 * from string to bool.
2153 * Luckily, 'properly' set settings will always come back as '0' or '1',
2154 * so we only have to worry about them and the 'improper' settings.
2156 * I frickin' hate PHP... :P
2158 * @param string $setting
2161 function wfIniGetBool( $setting ) {
2162 return wfStringToBool( ini_get( $setting ) );
2166 * Convert string value to boolean, when the following are interpreted as true:
2170 * - Any number, except 0
2171 * All other strings are interpreted as false.
2173 * @param string $val
2177 function wfStringToBool( $val ) {
2178 $val = strtolower( $val );
2179 // 'on' and 'true' can't have whitespace around them, but '1' can.
2183 ||
preg_match( "/^\s*[+-]?0*[1-9]/", $val ); // approx C atoi() function
2187 * Version of escapeshellarg() that works better on Windows.
2189 * Originally, this fixed the incorrect use of single quotes on Windows
2190 * (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in
2191 * PHP 5.2.6+ (bug backported to earlier distro releases of PHP).
2193 * @param string $args,... strings to escape and glue together,
2194 * or a single array of strings parameter
2196 * @deprecated since 1.30 use MediaWiki\Shell::escape()
2198 function wfEscapeShellArg( /*...*/ ) {
2199 return Shell
::escape( ...func_get_args() );
2203 * Execute a shell command, with time and memory limits mirrored from the PHP
2204 * configuration if supported.
2206 * @param string|string[] $cmd If string, a properly shell-escaped command line,
2207 * or an array of unescaped arguments, in which case each value will be escaped
2208 * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
2209 * @param null|mixed &$retval Optional, will receive the program's exit code.
2210 * (non-zero is usually failure). If there is an error from
2211 * read, select, or proc_open(), this will be set to -1.
2212 * @param array $environ Optional environment variables which should be
2213 * added to the executed command environment.
2214 * @param array $limits Optional array with limits(filesize, memory, time, walltime)
2215 * this overwrites the global wgMaxShell* limits.
2216 * @param array $options Array of options:
2217 * - duplicateStderr: Set this to true to duplicate stderr to stdout,
2218 * including errors from limit.sh
2219 * - profileMethod: By default this function will profile based on the calling
2220 * method. Set this to a string for an alternative method to profile from
2222 * @return string Collected stdout as a string
2223 * @deprecated since 1.30 use class MediaWiki\Shell\Shell
2225 function wfShellExec( $cmd, &$retval = null, $environ = [],
2226 $limits = [], $options = []
2228 if ( Shell
::isDisabled() ) {
2230 // Backwards compatibility be upon us...
2231 return 'Unable to run external programs, proc_open() is disabled.';
2234 if ( is_array( $cmd ) ) {
2235 $cmd = Shell
::escape( $cmd );
2238 $includeStderr = isset( $options['duplicateStderr'] ) && $options['duplicateStderr'];
2239 $profileMethod = $options['profileMethod'] ??
wfGetCaller();
2242 $result = Shell
::command( [] )
2243 ->unsafeParams( (array)$cmd )
2244 ->environment( $environ )
2246 ->includeStderr( $includeStderr )
2247 ->profileMethod( $profileMethod )
2249 ->restrict( Shell
::RESTRICT_NONE
)
2251 } catch ( ProcOpenError
$ex ) {
2256 $retval = $result->getExitCode();
2258 return $result->getStdout();
2262 * Execute a shell command, returning both stdout and stderr. Convenience
2263 * function, as all the arguments to wfShellExec can become unwieldy.
2265 * @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded.
2266 * @param string|string[] $cmd If string, a properly shell-escaped command line,
2267 * or an array of unescaped arguments, in which case each value will be escaped
2268 * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
2269 * @param null|mixed &$retval Optional, will receive the program's exit code.
2270 * (non-zero is usually failure)
2271 * @param array $environ Optional environment variables which should be
2272 * added to the executed command environment.
2273 * @param array $limits Optional array with limits(filesize, memory, time, walltime)
2274 * this overwrites the global wgMaxShell* limits.
2275 * @return string Collected stdout and stderr as a string
2276 * @deprecated since 1.30 use class MediaWiki\Shell\Shell
2278 function wfShellExecWithStderr( $cmd, &$retval = null, $environ = [], $limits = [] ) {
2279 return wfShellExec( $cmd, $retval, $environ, $limits,
2280 [ 'duplicateStderr' => true, 'profileMethod' => wfGetCaller() ] );
2284 * Generate a shell-escaped command line string to run a MediaWiki cli script.
2285 * Note that $parameters should be a flat array and an option with an argument
2286 * should consist of two consecutive items in the array (do not use "--option value").
2288 * @deprecated since 1.31, use Shell::makeScriptCommand()
2290 * @param string $script MediaWiki cli script path
2291 * @param array $parameters Arguments and options to the script
2292 * @param array $options Associative array of options:
2293 * 'php': The path to the php executable
2294 * 'wrapper': Path to a PHP wrapper to handle the maintenance script
2297 function wfShellWikiCmd( $script, array $parameters = [], array $options = [] ) {
2299 // Give site config file a chance to run the script in a wrapper.
2300 // The caller may likely want to call wfBasename() on $script.
2301 Hooks
::run( 'wfShellWikiCmd', [ &$script, &$parameters, &$options ] );
2302 $cmd = isset( $options['php'] ) ?
[ $options['php'] ] : [ $wgPhpCli ];
2303 if ( isset( $options['wrapper'] ) ) {
2304 $cmd[] = $options['wrapper'];
2307 // Escape each parameter for shell
2308 return Shell
::escape( array_merge( $cmd, $parameters ) );
2312 * wfMerge attempts to merge differences between three texts.
2313 * Returns true for a clean merge and false for failure or a conflict.
2315 * @param string $old
2316 * @param string $mine
2317 * @param string $yours
2318 * @param string &$result
2319 * @param string &$mergeAttemptResult
2322 function wfMerge( $old, $mine, $yours, &$result, &$mergeAttemptResult = null ) {
2325 # This check may also protect against code injection in
2326 # case of broken installations.
2327 Wikimedia\
suppressWarnings();
2328 $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
2329 Wikimedia\restoreWarnings
();
2331 if ( !$haveDiff3 ) {
2332 wfDebug( "diff3 not found\n" );
2336 # Make temporary files
2338 $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
2339 $mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
2340 $yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );
2342 # NOTE: diff3 issues a warning to stderr if any of the files does not end with
2343 # a newline character. To avoid this, we normalize the trailing whitespace before
2344 # creating the diff.
2346 fwrite( $oldtextFile, rtrim( $old ) . "\n" );
2347 fclose( $oldtextFile );
2348 fwrite( $mytextFile, rtrim( $mine ) . "\n" );
2349 fclose( $mytextFile );
2350 fwrite( $yourtextFile, rtrim( $yours ) . "\n" );
2351 fclose( $yourtextFile );
2353 # Check for a conflict
2354 $cmd = Shell
::escape( $wgDiff3, '-a', '--overlap-only', $mytextName,
2355 $oldtextName, $yourtextName );
2356 $handle = popen( $cmd, 'r' );
2358 $mergeAttemptResult = '';
2360 $data = fread( $handle, 8192 );
2361 if ( strlen( $data ) == 0 ) {
2364 $mergeAttemptResult .= $data;
2368 $conflict = $mergeAttemptResult !== '';
2371 $cmd = Shell
::escape( $wgDiff3, '-a', '-e', '--merge', $mytextName,
2372 $oldtextName, $yourtextName );
2373 $handle = popen( $cmd, 'r' );
2376 $data = fread( $handle, 8192 );
2377 if ( strlen( $data ) == 0 ) {
2383 unlink( $mytextName );
2384 unlink( $oldtextName );
2385 unlink( $yourtextName );
2387 if ( $result === '' && $old !== '' && !$conflict ) {
2388 wfDebug( "Unexpected null result from diff3. Command: $cmd\n" );
2395 * Returns unified plain-text diff of two texts.
2396 * "Useful" for machine processing of diffs.
2398 * @deprecated since 1.25, use DiffEngine/UnifiedDiffFormatter directly
2400 * @param string $before The text before the changes.
2401 * @param string $after The text after the changes.
2402 * @param string $params Command-line options for the diff command.
2403 * @return string Unified diff of $before and $after
2405 function wfDiff( $before, $after, $params = '-u' ) {
2406 if ( $before == $after ) {
2411 Wikimedia\
suppressWarnings();
2412 $haveDiff = $wgDiff && file_exists( $wgDiff );
2413 Wikimedia\restoreWarnings
();
2415 # This check may also protect against code injection in
2416 # case of broken installations.
2418 wfDebug( "diff executable not found\n" );
2419 $diffs = new Diff( explode( "\n", $before ), explode( "\n", $after ) );
2420 $format = new UnifiedDiffFormatter();
2421 return $format->format( $diffs );
2424 # Make temporary files
2426 $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
2427 $newtextFile = fopen( $newtextName = tempnam( $td, 'merge-your-' ), 'w' );
2429 fwrite( $oldtextFile, $before );
2430 fclose( $oldtextFile );
2431 fwrite( $newtextFile, $after );
2432 fclose( $newtextFile );
2434 // Get the diff of the two files
2435 $cmd = "$wgDiff " . $params . ' ' . Shell
::escape( $oldtextName, $newtextName );
2437 $h = popen( $cmd, 'r' );
2439 unlink( $oldtextName );
2440 unlink( $newtextName );
2441 throw new Exception( __METHOD__
. '(): popen() failed' );
2447 $data = fread( $h, 8192 );
2448 if ( strlen( $data ) == 0 ) {
2456 unlink( $oldtextName );
2457 unlink( $newtextName );
2459 // Kill the --- and +++ lines. They're not useful.
2460 $diff_lines = explode( "\n", $diff );
2461 if ( isset( $diff_lines[0] ) && strpos( $diff_lines[0], '---' ) === 0 ) {
2462 unset( $diff_lines[0] );
2464 if ( isset( $diff_lines[1] ) && strpos( $diff_lines[1], '+++' ) === 0 ) {
2465 unset( $diff_lines[1] );
2468 $diff = implode( "\n", $diff_lines );
2474 * This function works like "use VERSION" in Perl, the program will die with a
2475 * backtrace if the current version of PHP is less than the version provided
2477 * This is useful for extensions which due to their nature are not kept in sync
2478 * with releases, and might depend on other versions of PHP than the main code
2480 * Note: PHP might die due to parsing errors in some cases before it ever
2481 * manages to call this function, such is life
2483 * @see perldoc -f use
2485 * @param string|int|float $req_ver The version to check, can be a string, an integer, or a float
2487 * @deprecated since 1.30
2489 * @throws MWException
2491 function wfUsePHP( $req_ver ) {
2492 wfDeprecated( __FUNCTION__
, '1.30' );
2493 $php_ver = PHP_VERSION
;
2495 if ( version_compare( $php_ver, (string)$req_ver, '<' ) ) {
2496 throw new MWException( "PHP $req_ver required--this is only $php_ver" );
2501 * This function works like "use VERSION" in Perl except it checks the version
2502 * of MediaWiki, the program will die with a backtrace if the current version
2503 * of MediaWiki is less than the version provided.
2505 * This is useful for extensions which due to their nature are not kept in sync
2508 * Note: Due to the behavior of PHP's version_compare() which is used in this
2509 * function, if you want to allow the 'wmf' development versions add a 'c' (or
2510 * any single letter other than 'a', 'b' or 'p') as a post-fix to your
2511 * targeted version number. For example if you wanted to allow any variation
2512 * of 1.22 use `wfUseMW( '1.22c' )`. Using an 'a' or 'b' instead of 'c' will
2513 * not result in the same comparison due to the internal logic of
2514 * version_compare().
2516 * @see perldoc -f use
2518 * @deprecated since 1.26, use the "requires" property of extension.json
2519 * @param string|int|float $req_ver The version to check, can be a string, an integer, or a float
2520 * @throws MWException
2522 function wfUseMW( $req_ver ) {
2525 if ( version_compare( $wgVersion, (string)$req_ver, '<' ) ) {
2526 throw new MWException( "MediaWiki $req_ver required--this is only $wgVersion" );
2531 * Return the final portion of a pathname.
2532 * Reimplemented because PHP5's "basename()" is buggy with multibyte text.
2533 * https://bugs.php.net/bug.php?id=33898
2535 * PHP's basename() only considers '\' a pathchar on Windows and Netware.
2536 * We'll consider it so always, as we don't want '\s' in our Unix paths either.
2538 * @param string $path
2539 * @param string $suffix String to remove if present
2542 function wfBaseName( $path, $suffix = '' ) {
2543 if ( $suffix == '' ) {
2546 $encSuffix = '(?:' . preg_quote( $suffix, '#' ) . ')?';
2550 if ( preg_match( "#([^/\\\\]*?){$encSuffix}[/\\\\]*$#", $path, $matches ) ) {
2558 * Generate a relative path name to the given file.
2559 * May explode on non-matching case-insensitive paths,
2560 * funky symlinks, etc.
2562 * @param string $path Absolute destination path including target filename
2563 * @param string $from Absolute source path, directory only
2566 function wfRelativePath( $path, $from ) {
2567 // Normalize mixed input on Windows...
2568 $path = str_replace( '/', DIRECTORY_SEPARATOR
, $path );
2569 $from = str_replace( '/', DIRECTORY_SEPARATOR
, $from );
2571 // Trim trailing slashes -- fix for drive root
2572 $path = rtrim( $path, DIRECTORY_SEPARATOR
);
2573 $from = rtrim( $from, DIRECTORY_SEPARATOR
);
2575 $pieces = explode( DIRECTORY_SEPARATOR
, dirname( $path ) );
2576 $against = explode( DIRECTORY_SEPARATOR
, $from );
2578 if ( $pieces[0] !== $against[0] ) {
2579 // Non-matching Windows drive letters?
2580 // Return a full path.
2584 // Trim off common prefix
2585 while ( count( $pieces ) && count( $against )
2586 && $pieces[0] == $against[0] ) {
2587 array_shift( $pieces );
2588 array_shift( $against );
2591 // relative dots to bump us to the parent
2592 while ( count( $against ) ) {
2593 array_unshift( $pieces, '..' );
2594 array_shift( $against );
2597 array_push( $pieces, wfBaseName( $path ) );
2599 return implode( DIRECTORY_SEPARATOR
, $pieces );
2603 * Reset the session id
2605 * @deprecated since 1.27, use MediaWiki\Session\SessionManager instead
2608 function wfResetSessionID() {
2609 wfDeprecated( __FUNCTION__
, '1.27' );
2610 $session = SessionManager
::getGlobalSession();
2611 $delay = $session->delaySave();
2613 $session->resetId();
2615 // Make sure a session is started, since that's what the old
2616 // wfResetSessionID() did.
2617 if ( session_id() !== $session->getId() ) {
2618 wfSetupSession( $session->getId() );
2621 ScopedCallback
::consume( $delay );
2625 * Initialise php session
2627 * @deprecated since 1.27, use MediaWiki\Session\SessionManager instead.
2628 * Generally, "using" SessionManager will be calling ->getSessionById() or
2629 * ::getGlobalSession() (depending on whether you were passing $sessionId
2630 * here), then calling $session->persist().
2631 * @param bool|string $sessionId
2633 function wfSetupSession( $sessionId = false ) {
2634 wfDeprecated( __FUNCTION__
, '1.27' );
2637 session_id( $sessionId );
2640 $session = SessionManager
::getGlobalSession();
2641 $session->persist();
2643 if ( session_id() !== $session->getId() ) {
2644 session_id( $session->getId() );
2646 Wikimedia\
quietCall( 'session_start' );
2650 * Get an object from the precompiled serialized directory
2652 * @param string $name
2653 * @return mixed The variable on success, false on failure
2655 function wfGetPrecompiledData( $name ) {
2658 $file = "$IP/serialized/$name";
2659 if ( file_exists( $file ) ) {
2660 $blob = file_get_contents( $file );
2662 return unserialize( $blob );
2670 * @param string[] $data Array with string keys/values to export
2671 * @param string $header
2672 * @return string PHP code
2674 function wfMakeStaticArrayFile( array $data, $header = 'Automatically generated' ) {
2675 $format = "\t%s => %s,\n";
2677 . "// " . implode( "\n// ", explode( "\n", $header ) ) . "\n"
2679 foreach ( $data as $key => $value ) {
2682 var_export( $key, true ),
2683 var_export( $value, true )
2691 * Make a cache key for the local wiki.
2693 * @deprecated since 1.30 Call makeKey on a BagOStuff instance
2694 * @param string $args,...
2697 function wfMemcKey( /*...*/ ) {
2698 return ObjectCache
::getLocalClusterInstance()->makeKey( ...func_get_args() );
2702 * Make a cache key for a foreign DB.
2704 * Must match what wfMemcKey() would produce in context of the foreign wiki.
2707 * @param string $prefix
2708 * @param string $args,...
2711 function wfForeignMemcKey( $db, $prefix /*...*/ ) {
2712 $args = array_slice( func_get_args(), 2 );
2713 $keyspace = $prefix ?
"$db-$prefix" : $db;
2714 return ObjectCache
::getLocalClusterInstance()->makeKeyInternal( $keyspace, $args );
2718 * Make a cache key with database-agnostic prefix.
2720 * Doesn't have a wiki-specific namespace. Uses a generic 'global' prefix
2721 * instead. Must have a prefix as otherwise keys that use a database name
2722 * in the first segment will clash with wfMemcKey/wfForeignMemcKey.
2724 * @deprecated since 1.30 Call makeGlobalKey on a BagOStuff instance
2726 * @param string $args,...
2729 function wfGlobalCacheKey( /*...*/ ) {
2730 return ObjectCache
::getLocalClusterInstance()->makeGlobalKey( ...func_get_args() );
2734 * Get an ASCII string identifying this wiki
2735 * This is used as a prefix in memcached keys
2739 function wfWikiID() {
2740 global $wgDBprefix, $wgDBname;
2741 if ( $wgDBprefix ) {
2742 return "$wgDBname-$wgDBprefix";
2749 * Split a wiki ID into DB name and table prefix
2751 * @param string $wiki
2755 function wfSplitWikiID( $wiki ) {
2756 $bits = explode( '-', $wiki, 2 );
2757 if ( count( $bits ) < 2 ) {
2764 * Get a Database object.
2766 * @param int $db Index of the connection to get. May be DB_MASTER for the
2767 * master (for write queries), DB_REPLICA for potentially lagged read
2768 * queries, or an integer >= 0 for a particular server.
2770 * @param string|string[] $groups Query groups. An array of group names that this query
2771 * belongs to. May contain a single string if the query is only
2774 * @param string|bool $wiki The wiki ID, or false for the current wiki
2776 * Note: multiple calls to wfGetDB(DB_REPLICA) during the course of one request
2777 * will always return the same object, unless the underlying connection or load
2778 * balancer is manually destroyed.
2780 * Note 2: use $this->getDB() in maintenance scripts that may be invoked by
2781 * updater to ensure that a proper database is being updated.
2783 * @todo Replace calls to wfGetDB with calls to LoadBalancer::getConnection()
2784 * on an injected instance of LoadBalancer.
2786 * @return \Wikimedia\Rdbms\Database
2788 function wfGetDB( $db, $groups = [], $wiki = false ) {
2789 return wfGetLB( $wiki )->getConnection( $db, $groups, $wiki );
2793 * Get a load balancer object.
2795 * @deprecated since 1.27, use MediaWikiServices::getDBLoadBalancer()
2796 * or MediaWikiServices::getDBLoadBalancerFactory() instead.
2798 * @param string|bool $wiki Wiki ID, or false for the current wiki
2799 * @return \Wikimedia\Rdbms\LoadBalancer
2801 function wfGetLB( $wiki = false ) {
2802 if ( $wiki === false ) {
2803 return MediaWikiServices
::getInstance()->getDBLoadBalancer();
2805 $factory = MediaWikiServices
::getInstance()->getDBLoadBalancerFactory();
2806 return $factory->getMainLB( $wiki );
2811 * Get the load balancer factory object
2813 * @deprecated since 1.27, use MediaWikiServices::getDBLoadBalancerFactory() instead.
2815 * @return \Wikimedia\Rdbms\LBFactory
2817 function wfGetLBFactory() {
2818 return MediaWikiServices
::getInstance()->getDBLoadBalancerFactory();
2823 * Shortcut for RepoGroup::singleton()->findFile()
2825 * @param string|Title $title String or Title object
2826 * @param array $options Associative array of options (see RepoGroup::findFile)
2827 * @return File|bool File, or false if the file does not exist
2829 function wfFindFile( $title, $options = [] ) {
2830 return RepoGroup
::singleton()->findFile( $title, $options );
2834 * Get an object referring to a locally registered file.
2835 * Returns a valid placeholder object if the file does not exist.
2837 * @param Title|string $title
2838 * @return LocalFile|null A File, or null if passed an invalid Title
2840 function wfLocalFile( $title ) {
2841 return RepoGroup
::singleton()->getLocalRepo()->newFile( $title );
2845 * Should low-performance queries be disabled?
2848 * @codeCoverageIgnore
2850 function wfQueriesMustScale() {
2851 global $wgMiserMode;
2853 ||
( SiteStats
::pages() > 100000
2854 && SiteStats
::edits() > 1000000
2855 && SiteStats
::users() > 10000 );
2859 * Get the path to a specified script file, respecting file
2860 * extensions; this is a wrapper around $wgScriptPath etc.
2861 * except for 'index' and 'load' which use $wgScript/$wgLoadScript
2863 * @param string $script Script filename, sans extension
2866 function wfScript( $script = 'index' ) {
2867 global $wgScriptPath, $wgScript, $wgLoadScript;
2868 if ( $script === 'index' ) {
2870 } elseif ( $script === 'load' ) {
2871 return $wgLoadScript;
2873 return "{$wgScriptPath}/{$script}.php";
2878 * Get the script URL.
2880 * @return string Script URL
2882 function wfGetScriptUrl() {
2883 if ( isset( $_SERVER['SCRIPT_NAME'] ) ) {
2884 /* as it was called, minus the query string.
2886 * Some sites use Apache rewrite rules to handle subdomains,
2887 * and have PHP set up in a weird way that causes PHP_SELF
2888 * to contain the rewritten URL instead of the one that the
2889 * outside world sees.
2891 * If in this mode, use SCRIPT_URL instead, which mod_rewrite
2892 * provides containing the "before" URL.
2894 return $_SERVER['SCRIPT_NAME'];
2896 return $_SERVER['URL'];
2901 * Convenience function converts boolean values into "true"
2902 * or "false" (string) values
2904 * @param bool $value
2907 function wfBoolToStr( $value ) {
2908 return $value ?
'true' : 'false';
2912 * Get a platform-independent path to the null file, e.g. /dev/null
2916 function wfGetNull() {
2917 return wfIsWindows() ?
'NUL' : '/dev/null';
2921 * Waits for the replica DBs to catch up to the master position
2923 * Use this when updating very large numbers of rows, as in maintenance scripts,
2924 * to avoid causing too much lag. Of course, this is a no-op if there are no replica DBs.
2926 * By default this waits on the main DB cluster of the current wiki.
2927 * If $cluster is set to "*" it will wait on all DB clusters, including
2928 * external ones. If the lag being waiting on is caused by the code that
2929 * does this check, it makes since to use $ifWritesSince, particularly if
2930 * cluster is "*", to avoid excess overhead.
2932 * Never call this function after a big DB write that is still in a transaction.
2933 * This only makes sense after the possible lag inducing changes were committed.
2935 * @param float|null $ifWritesSince Only wait if writes were done since this UNIX timestamp
2936 * @param string|bool $wiki Wiki identifier accepted by wfGetLB
2937 * @param string|bool $cluster Cluster name accepted by LBFactory. Default: false.
2938 * @param int|null $timeout Max wait time. Default: 1 day (cli), ~10 seconds (web)
2939 * @return bool Success (able to connect and no timeouts reached)
2940 * @deprecated since 1.27 Use LBFactory::waitForReplication
2942 function wfWaitForSlaves(
2943 $ifWritesSince = null, $wiki = false, $cluster = false, $timeout = null
2945 if ( $timeout === null ) {
2946 $timeout = wfIsCLI() ?
60 : 10;
2949 if ( $cluster === '*' ) {
2952 } elseif ( $wiki === false ) {
2957 $lbFactory = MediaWikiServices
::getInstance()->getDBLoadBalancerFactory();
2958 $lbFactory->waitForReplication( [
2960 'cluster' => $cluster,
2961 'timeout' => $timeout,
2962 // B/C: first argument used to be "max seconds of lag"; ignore such values
2963 'ifWritesSince' => ( $ifWritesSince > 1e9
) ?
$ifWritesSince : null
2965 } catch ( DBReplicationWaitError
$e ) {
2973 * Count down from $seconds to zero on the terminal, with a one-second pause
2974 * between showing each number. For use in command-line scripts.
2976 * @deprecated since 1.31, use Maintenance::countDown()
2978 * @codeCoverageIgnore
2979 * @param int $seconds
2981 function wfCountDown( $seconds ) {
2982 wfDeprecated( __FUNCTION__
, '1.31' );
2983 for ( $i = $seconds; $i >= 0; $i-- ) {
2984 if ( $i != $seconds ) {
2985 echo str_repeat( "\x08", strlen( $i +
1 ) );
2997 * Replace all invalid characters with '-'.
2998 * Additional characters can be defined in $wgIllegalFileChars (see T22489).
2999 * By default, $wgIllegalFileChars includes ':', '/', '\'.
3001 * @param string $name Filename to process
3004 function wfStripIllegalFilenameChars( $name ) {
3005 global $wgIllegalFileChars;
3006 $illegalFileChars = $wgIllegalFileChars ?
"|[" . $wgIllegalFileChars . "]" : '';
3007 $name = preg_replace(
3008 "/[^" . Title
::legalChars() . "]" . $illegalFileChars . "/",
3012 // $wgIllegalFileChars may not include '/' and '\', so we still need to do this
3013 $name = wfBaseName( $name );
3018 * Set PHP's memory limit to the larger of php.ini or $wgMemoryLimit
3020 * @return int Resulting value of the memory limit.
3022 function wfMemoryLimit() {
3023 global $wgMemoryLimit;
3024 $memlimit = wfShorthandToInteger( ini_get( 'memory_limit' ) );
3025 if ( $memlimit != -1 ) {
3026 $conflimit = wfShorthandToInteger( $wgMemoryLimit );
3027 if ( $conflimit == -1 ) {
3028 wfDebug( "Removing PHP's memory limit\n" );
3029 Wikimedia\
suppressWarnings();
3030 ini_set( 'memory_limit', $conflimit );
3031 Wikimedia\restoreWarnings
();
3033 } elseif ( $conflimit > $memlimit ) {
3034 wfDebug( "Raising PHP's memory limit to $conflimit bytes\n" );
3035 Wikimedia\
suppressWarnings();
3036 ini_set( 'memory_limit', $conflimit );
3037 Wikimedia\restoreWarnings
();
3045 * Set PHP's time limit to the larger of php.ini or $wgTransactionalTimeLimit
3047 * @return int Prior time limit
3050 function wfTransactionalTimeLimit() {
3051 global $wgTransactionalTimeLimit;
3053 $timeLimit = ini_get( 'max_execution_time' );
3054 // Note that CLI scripts use 0
3055 if ( $timeLimit > 0 && $wgTransactionalTimeLimit > $timeLimit ) {
3056 set_time_limit( $wgTransactionalTimeLimit );
3059 ignore_user_abort( true ); // ignore client disconnects
3065 * Converts shorthand byte notation to integer form
3067 * @param string $string
3068 * @param int $default Returned if $string is empty
3071 function wfShorthandToInteger( $string = '', $default = -1 ) {
3072 $string = trim( $string );
3073 if ( $string === '' ) {
3076 $last = $string[strlen( $string ) - 1];
3077 $val = intval( $string );
3082 // break intentionally missing
3086 // break intentionally missing
3096 * Get the normalised IETF language tag
3097 * See unit test for examples.
3098 * See mediawiki.language.bcp47 for the JavaScript implementation.
3100 * @deprecated since 1.31, use LanguageCode::bcp47() directly.
3102 * @param string $code The language code.
3103 * @return string The language code which complying with BCP 47 standards.
3105 function wfBCP47( $code ) {
3106 return LanguageCode
::bcp47( $code );
3110 * Get a specific cache object.
3112 * @param int|string $cacheType A CACHE_* constants, or other key in $wgObjectCaches
3115 function wfGetCache( $cacheType ) {
3116 return ObjectCache
::getInstance( $cacheType );
3120 * Get the main cache object
3124 function wfGetMainCache() {
3125 global $wgMainCacheType;
3126 return ObjectCache
::getInstance( $wgMainCacheType );
3130 * Get the cache object used by the message cache
3134 function wfGetMessageCacheStorage() {
3135 global $wgMessageCacheType;
3136 return ObjectCache
::getInstance( $wgMessageCacheType );
3140 * Call hook functions defined in $wgHooks
3142 * @param string $event Event name
3143 * @param array $args Parameters passed to hook functions
3144 * @param string|null $deprecatedVersion Optionally mark hook as deprecated with version number
3146 * @return bool True if no handler aborted the hook
3147 * @deprecated since 1.25 - use Hooks::run
3149 function wfRunHooks( $event, array $args = [], $deprecatedVersion = null ) {
3150 wfDeprecated( __METHOD__
, '1.25' );
3151 return Hooks
::run( $event, $args, $deprecatedVersion );
3155 * Wrapper around php's unpack.
3157 * @param string $format The format string (See php's docs)
3158 * @param string $data A binary string of binary data
3159 * @param int|bool $length The minimum length of $data or false. This is to
3160 * prevent reading beyond the end of $data. false to disable the check.
3162 * Also be careful when using this function to read unsigned 32 bit integer
3163 * because php might make it negative.
3165 * @throws MWException If $data not long enough, or if unpack fails
3166 * @return array Associative array of the extracted data
3168 function wfUnpack( $format, $data, $length = false ) {
3169 if ( $length !== false ) {
3170 $realLen = strlen( $data );
3171 if ( $realLen < $length ) {
3172 throw new MWException( "Tried to use wfUnpack on a "
3173 . "string of length $realLen, but needed one "
3174 . "of at least length $length."
3179 Wikimedia\
suppressWarnings();
3180 $result = unpack( $format, $data );
3181 Wikimedia\restoreWarnings
();
3183 if ( $result === false ) {
3184 // If it cannot extract the packed data.
3185 throw new MWException( "unpack could not unpack binary data" );
3191 * Determine if an image exists on the 'bad image list'.
3193 * The format of MediaWiki:Bad_image_list is as follows:
3194 * * Only list items (lines starting with "*") are considered
3195 * * The first link on a line must be a link to a bad image
3196 * * Any subsequent links on the same line are considered to be exceptions,
3197 * i.e. articles where the image may occur inline.
3199 * @param string $name The image name to check
3200 * @param Title|bool $contextTitle The page on which the image occurs, if known
3201 * @param string $blacklist Wikitext of a file blacklist
3204 function wfIsBadImage( $name, $contextTitle = false, $blacklist = null ) {
3205 # Handle redirects; callers almost always hit wfFindFile() anyway,
3206 # so just use that method because it has a fast process cache.
3207 $file = wfFindFile( $name ); // get the final name
3208 $name = $file ?
$file->getTitle()->getDBkey() : $name;
3210 # Run the extension hook
3212 if ( !Hooks
::run( 'BadImage', [ $name, &$bad ] ) ) {
3216 $cache = ObjectCache
::getLocalServerInstance( 'hash' );
3217 $key = $cache->makeKey(
3218 'bad-image-list', ( $blacklist === null ) ?
'default' : md5( $blacklist )
3220 $badImages = $cache->get( $key );
3222 if ( $badImages === false ) { // cache miss
3223 if ( $blacklist === null ) {
3224 $blacklist = wfMessage( 'bad_image_list' )->inContentLanguage()->plain(); // site list
3226 # Build the list now
3228 $lines = explode( "\n", $blacklist );
3229 foreach ( $lines as $line ) {
3231 if ( substr( $line, 0, 1 ) !== '*' ) {
3237 if ( !preg_match_all( '/\[\[:?(.*?)\]\]/', $line, $m ) ) {
3242 $imageDBkey = false;
3243 foreach ( $m[1] as $i => $titleText ) {
3244 $title = Title
::newFromText( $titleText );
3245 if ( !is_null( $title ) ) {
3247 $imageDBkey = $title->getDBkey();
3249 $exceptions[$title->getPrefixedDBkey()] = true;
3254 if ( $imageDBkey !== false ) {
3255 $badImages[$imageDBkey] = $exceptions;
3258 $cache->set( $key, $badImages, 60 );
3261 $contextKey = $contextTitle ?
$contextTitle->getPrefixedDBkey() : false;
3262 $bad = isset( $badImages[$name] ) && !isset( $badImages[$name][$contextKey] );
3268 * Determine whether the client at a given source IP is likely to be able to
3269 * access the wiki via HTTPS.
3271 * @param string $ip The IPv4/6 address in the normal human-readable form
3274 function wfCanIPUseHTTPS( $ip ) {
3276 Hooks
::run( 'CanIPUseHTTPS', [ $ip, &$canDo ] );
3281 * Determine input string is represents as infinity
3283 * @param string $str The string to determine
3287 function wfIsInfinity( $str ) {
3288 // These are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js).
3289 $infinityValues = [ 'infinite', 'indefinite', 'infinity', 'never' ];
3290 return in_array( $str, $infinityValues );
3294 * Returns true if these thumbnail parameters match one that MediaWiki
3295 * requests from file description pages and/or parser output.
3297 * $params is considered non-standard if they involve a non-standard
3298 * width or any non-default parameters aside from width and page number.
3299 * The number of possible files with standard parameters is far less than
3300 * that of all combinations; rate-limiting for them can thus be more generious.
3303 * @param array $params
3305 * @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25
3307 function wfThumbIsStandard( File
$file, array $params ) {
3308 global $wgThumbLimits, $wgImageLimits, $wgResponsiveImages;
3310 $multipliers = [ 1 ];
3311 if ( $wgResponsiveImages ) {
3312 // These available sizes are hardcoded currently elsewhere in MediaWiki.
3313 // @see Linker::processResponsiveImages
3314 $multipliers[] = 1.5;
3318 $handler = $file->getHandler();
3319 if ( !$handler ||
!isset( $params['width'] ) ) {
3324 if ( isset( $params['page'] ) ) {
3325 $basicParams['page'] = $params['page'];
3330 // Expand limits to account for multipliers
3331 foreach ( $multipliers as $multiplier ) {
3332 $thumbLimits = array_merge( $thumbLimits, array_map(
3333 function ( $width ) use ( $multiplier ) {
3334 return round( $width * $multiplier );
3337 $imageLimits = array_merge( $imageLimits, array_map(
3338 function ( $pair ) use ( $multiplier ) {
3340 round( $pair[0] * $multiplier ),
3341 round( $pair[1] * $multiplier ),
3347 // Check if the width matches one of $wgThumbLimits
3348 if ( in_array( $params['width'], $thumbLimits ) ) {
3349 $normalParams = $basicParams +
[ 'width' => $params['width'] ];
3350 // Append any default values to the map (e.g. "lossy", "lossless", ...)
3351 $handler->normaliseParams( $file, $normalParams );
3353 // If not, then check if the width matchs one of $wgImageLimits
3355 foreach ( $imageLimits as $pair ) {
3356 $normalParams = $basicParams +
[ 'width' => $pair[0], 'height' => $pair[1] ];
3357 // Decide whether the thumbnail should be scaled on width or height.
3358 // Also append any default values to the map (e.g. "lossy", "lossless", ...)
3359 $handler->normaliseParams( $file, $normalParams );
3360 // Check if this standard thumbnail size maps to the given width
3361 if ( $normalParams['width'] == $params['width'] ) {
3367 return false; // not standard for description pages
3371 // Check that the given values for non-page, non-width, params are just defaults
3372 foreach ( $params as $key => $value ) {
3373 if ( !isset( $normalParams[$key] ) ||
$normalParams[$key] != $value ) {
3382 * Merges two (possibly) 2 dimensional arrays into the target array ($baseArray).
3384 * Values that exist in both values will be combined with += (all values of the array
3385 * of $newValues will be added to the values of the array of $baseArray, while values,
3386 * that exists in both, the value of $baseArray will be used).
3388 * @param array $baseArray The array where you want to add the values of $newValues to
3389 * @param array $newValues An array with new values
3390 * @return array The combined array
3393 function wfArrayPlus2d( array $baseArray, array $newValues ) {
3394 // First merge items that are in both arrays
3395 foreach ( $baseArray as $name => &$groupVal ) {
3396 if ( isset( $newValues[$name] ) ) {
3397 $groupVal +
= $newValues[$name];
3400 // Now add items that didn't exist yet
3401 $baseArray +
= $newValues;
3407 * Get system resource usage of current request context.
3408 * Invokes the getrusage(2) system call, requesting RUSAGE_SELF if on PHP5
3409 * or RUSAGE_THREAD if on HHVM. Returns false if getrusage is not available.
3412 * @return array|bool Resource usage data or false if no data available.
3414 function wfGetRusage() {
3415 if ( !function_exists( 'getrusage' ) ) {
3417 } elseif ( defined( 'HHVM_VERSION' ) && PHP_OS
=== 'Linux' ) {
3418 return getrusage( 2 /* RUSAGE_THREAD */ );
3420 return getrusage( 0 /* RUSAGE_SELF */ );