includes/Title.php

   1 <?php
   2 # See title.doc
   3
   4 $wgTitleInterwikiCache = array();
   5
   6 # Title class
   7 #
   8 # * Represents a title, which may contain an interwiki designation or namespace
   9 # * Can fetch various kinds of data from the database, albeit inefficiently.
  10 #
  11 class Title {
  12         # All member variables should be considered private
  13         # Please use the accessor functions
  14
  15         var $mTextform;           # Text form (spaces not underscores) of the main part
  16         var $mUrlform;            # URL-encoded form of the main part
  17         var $mDbkeyform;          # Main part with underscores
  18         var $mNamespace;          # Namespace index, i.e. one of the NS_xxxx constants
  19         var $mInterwiki;          # Interwiki prefix (or null string)
  20         var $mFragment;           # Title fragment (i.e. the bit after the #)
  21         var $mArticleID;          # Article ID, fetched from the link cache on demand
  22         var $mRestrictions;       # Array of groups allowed to edit this article
  23                               # Only null or "sysop" are supported
  24         var $mRestrictionsLoaded; # Boolean for initialisation on demand
  25         var $mPrefixedText;       # Text form including namespace/interwiki, initialised on demand
  26         var $mDefaultNamespace;   # Namespace index when there is no namespace
  27                               # Zero except in {{transclusion}} tags
  28
  29 #----------------------------------------------------------------------------
  30 #   Construction
  31 #----------------------------------------------------------------------------
  32
  33         /* private */ function Title()
  34         {
  35                 $this->mInterwiki = $this->mUrlform =
  36                 $this->mTextform = $this->mDbkeyform = "";
  37                 $this->mArticleID = -1;
  38                 $this->mNamespace = 0;
  39                 $this->mRestrictionsLoaded = false;
  40                 $this->mRestrictions = array();
  41         $this->mDefaultNamespace = 0;
  42         }
  43
  44         # From a prefixed DB key
  45         /* static */ function newFromDBkey( $key )
  46         {
  47                 $t = new Title();
  48                 $t->mDbkeyform = $key;
  49                 if( $t->secureAndSplit() )
  50                         return $t;
  51                 else
  52                         return NULL;
  53         }
  54
  55         # From text, such as what you would find in a link
  56         /* static */ function newFromText( $text, $defaultNamespace = 0 )
  57         {
  58                 $fname = "Title::newFromText";
  59                 wfProfileIn( $fname );
  60
  61                 if( is_object( $text ) ) {
  62                         wfDebugDieBacktrace( "Called with object instead of string." );
  63                 }
  64                 global $wgInputEncoding;
  65                 $text = do_html_entity_decode( $text, ENT_COMPAT, $wgInputEncoding );
  66
  67                 $text = wfMungeToUtf8( $text );
  68
  69
  70                 # What was this for? TS 2004-03-03
  71                 # $text = urldecode( $text );
  72
  73                 $t = new Title();
  74                 $t->mDbkeyform = str_replace( " ", "_", $text );
  75                 $t->mDefaultNamespace = $defaultNamespace;
  76
  77                 wfProfileOut( $fname );
  78                 if ( !is_object( $t ) ) {
  79                         var_dump( debug_backtrace() );
  80                 }
  81                 if( $t->secureAndSplit() ) {
  82                         return $t;
  83                 } else {
  84                         return NULL;
  85                 }
  86         }
  87
  88         # From a URL-encoded title
  89         /* static */ function newFromURL( $url )
  90         {
  91                 global $wgLang, $wgServer, $wgIsMySQL, $wgIsPg;
  92                 $t = new Title();
  93
  94                 # For compatibility with old buggy URLs. "+" is not valid in titles,
  95                 # but some URLs used it as a space replacement and they still come
  96                 # from some external search tools.
  97                 $s = str_replace( "+", " ", $url );
  98
  99                 # For links that came from outside, check for alternate/legacy
 100                 # character encoding.
 101                 wfDebug( "Servr: $wgServer\n" );
 102                 if( empty( $_SERVER["HTTP_REFERER"] ) ||
 103                         strncmp($wgServer, $_SERVER["HTTP_REFERER"], strlen( $wgServer ) ) )
 104                 {
 105                         $s = $wgLang->checkTitleEncoding( $s );
 106                 } else {
 107                         wfDebug( "Refer: {$_SERVER['HTTP_REFERER']}\n" );
 108                 }
 109
 110                 $t->mDbkeyform = str_replace( " ", "_", $s );
 111                 if( $t->secureAndSplit() ) {
 112                         # check that lenght of title is < cur_title size
 113                         if ($wgIsMySQL) {
 114                                 $sql = "SHOW COLUMNS FROM cur LIKE \"cur_title\";";
 115                                 $cur_title_object = wfFetchObject(wfQuery( $sql, DB_READ ));
 116
 117                                 preg_match( "/\((.*)\)/", $cur_title_object->Type, $cur_title_type);
 118                                 $cur_title_size=$cur_title_type[1];
 119                         } else {
 120                                 /* midom:FIXME pg_field_type does not return varchar length
 121                                    assume 255 */
 122                                 $cur_title_size=255;
 123                         }
 124
 125                         if (strlen($t->mDbkeyform) > $cur_title_size ) {
 126                                 return NULL;
 127                         }
 128
 129                         return $t;
 130                 } else {
 131                         return NULL;
 132                 }
 133         }
 134
 135         # From a cur_id
 136         # This is inefficiently implemented, the cur row is requested but not
 137         # used for anything else
 138         /* static */ function newFromID( $id )
 139         {
 140                 $fname = "Title::newFromID";
 141                 $row = wfGetArray( "cur", array( "cur_namespace", "cur_title" ),
 142                         array( "cur_id" => $id ), $fname );
 143                 if ( $row !== false ) {
 144                         $title = Title::makeTitle( $row->cur_namespace, $row->cur_title );
 145                 } else {
 146                         $title = NULL;
 147                 }
 148                 return $title;
 149         }
 150
 151         # From a namespace index and a DB key
 152         /* static */ function makeTitle( $ns, $title )
 153         {
 154                 $t = new Title();
 155                 $t->mDbkeyform = Title::makeName( $ns, $title );
 156                 if( $t->secureAndSplit() ) {
 157                         return $t;
 158                 } else {
 159                         return NULL;
 160                 }
 161         }
 162
 163         function newMainPage()
 164         {
 165                 return Title::newFromText( wfMsg( "mainpage" ) );
 166         }
 167
 168 #----------------------------------------------------------------------------
 169 #       Static functions
 170 #----------------------------------------------------------------------------
 171
 172         # Get the prefixed DB key associated with an ID
 173         /* static */ function nameOf( $id )
 174         {
 175                 $sql = "SELECT cur_namespace,cur_title FROM cur WHERE " .
 176                   "cur_id={$id}";
 177                 $res = wfQuery( $sql, DB_READ, "Article::nameOf" );
 178                 if ( 0 == wfNumRows( $res ) ) { return NULL; }
 179
 180                 $s = wfFetchObject( $res );
 181                 $n = Title::makeName( $s->cur_namespace, $s->cur_title );
 182                 return $n;
 183         }
 184
 185         # Get a regex character class describing the legal characters in a link
 186         /* static */ function legalChars()
 187         {
 188                 # Missing characters:
 189                 #  * []|# Needed for link syntax
 190                 #  * % and + are corrupted by Apache when they appear in the path
 191                 #  * % seems to work though
 192                 #
 193                 # Theoretically 0x80-0x9F of ISO 8859-1 should be disallowed, but
 194                 # this breaks interlanguage links
 195
 196                 $set = " %!\"$&'()*,\\-.\\/0-9:;=?@A-Z\\\\^_`a-z{}~\\x80-\\xFF";
 197                 return $set;
 198         }
 199
 200         # Returns a stripped-down a title string ready for the search index
 201         # Takes a namespace index and a text-form main part
 202         /* static */ function indexTitle( $ns, $title )
 203         {
 204                 global $wgDBminWordLen, $wgLang;
 205
 206                 $lc = SearchEngine::legalSearchChars() . "&#;";
 207                 $t = $wgLang->stripForSearch( $title );
 208                 $t = preg_replace( "/[^{$lc}]+/", " ", $t );
 209                 $t = strtolower( $t );
 210
 211                 # Handle 's, s'
 212                 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
 213                 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
 214
 215                 $t = preg_replace( "/\\s+/", " ", $t );
 216
 217                 if ( $ns == Namespace::getImage() ) {
 218                         $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
 219                 }
 220                 return trim( $t );
 221         }
 222
 223         # Make a prefixed DB key from a DB key and a namespace index
 224         /* static */ function makeName( $ns, $title )
 225         {
 226                 global $wgLang;
 227
 228                 $n = $wgLang->getNsText( $ns );
 229                 if ( "" == $n ) { return $title; }
 230                 else { return "{$n}:{$title}"; }
 231         }
 232
 233         # Arguably static
 234         # Returns the URL associated with an interwiki prefix
 235         # The URL contains $1, which is replaced by the title
 236         function getInterwikiLink( $key )
 237         {
 238                 global $wgMemc, $wgDBname, $wgInterwikiExpiry, $wgTitleInterwikiCache;
 239
 240                 $k = "$wgDBname:interwiki:$key";
 241
 242                 if( array_key_exists( $k, $wgTitleInterwikiCache ) )
 243                         return $wgTitleInterwikiCache[$k]->iw_url;
 244
 245                 $s = $wgMemc->get( $k );
 246                 # Ignore old keys with no iw_local
 247                 if( $s && isset( $s->iw_local ) ) {
 248                         $wgTitleInterwikiCache[$k] = $s;
 249                         return $s->iw_url;
 250                 }
 251                 $dkey = wfStrencode( $key );
 252                 $query = "SELECT iw_url,iw_local FROM interwiki WHERE iw_prefix='$dkey'";
 253                 $res = wfQuery( $query, DB_READ, "Title::getInterwikiLink" );
 254                 if(!$res) return "";
 255
 256                 $s = wfFetchObject( $res );
 257                 if(!$s) {
 258                         $s = (object)false;
 259                         $s->iw_url = "";
 260                 }
 261                 $wgMemc->set( $k, $s, $wgInterwikiExpiry );
 262                 $wgTitleInterwikiCache[$k] = $s;
 263                 return $s->iw_url;
 264         }
 265
 266         function isLocal() {
 267                 global $wgTitleInterwikiCache, $wgDBname;
 268
 269                 if ( $this->mInterwiki != "" ) {
 270                         # Make sure key is loaded into cache
 271                         $this->getInterwikiLink( $this->mInterwiki );
 272                         $k = "$wgDBname:interwiki:" . $this->mInterwiki;
 273                         return (bool)($wgTitleInterwikiCache[$k]->iw_local);
 274                 } else {
 275                         return true;
 276                 }
 277         }
 278
 279         # Update the cur_touched field for an array of title objects
 280         # Inefficient unless the IDs are already loaded into the link cache
 281         /* static */ function touchArray( $titles, $timestamp = "" ) {
 282                 if ( count( $titles ) == 0 ) {
 283                         return;
 284                 }
 285                 if ( $timestamp == "" ) {
 286                         $timestamp = wfTimestampNow();
 287                 }
 288                 $sql = "UPDATE cur SET cur_touched='{$timestamp}' WHERE cur_id IN (";
 289                 $first = true;
 290
 291                 foreach ( $titles as $title ) {
 292                         if ( ! $first ) {
 293                                 $sql .= ",";
 294                         }
 295
 296                         $first = false;
 297                         $sql .= $title->getArticleID();
 298                 }
 299                 $sql .= ")";
 300                 if ( ! $first ) {
 301                         wfQuery( $sql, DB_WRITE, "Title::touchArray" );
 302                 }
 303         }
 304
 305 #----------------------------------------------------------------------------
 306 #       Other stuff
 307 #----------------------------------------------------------------------------
 308
 309         # Simple accessors
 310         # See the definitions at the top of this file
 311
 312         function getText() { return $this->mTextform; }
 313         function getPartialURL() { return $this->mUrlform; }
 314         function getDBkey() { return $this->mDbkeyform; }
 315         function getNamespace() { return $this->mNamespace; }
 316         function setNamespace( $n ) { $this->mNamespace = $n; }
 317         function getInterwiki() { return $this->mInterwiki; }
 318         function getFragment() { return $this->mFragment; }
 319         function getDefaultNamespace() { return $this->mDefaultNamespace; }
 320
 321         # Get title for search index
 322         function getIndexTitle()
 323         {
 324                 return Title::indexTitle( $this->mNamespace, $this->mTextform );
 325         }
 326
 327         # Get prefixed title with underscores
 328         function getPrefixedDBkey()
 329         {
 330                 $s = $this->prefix( $this->mDbkeyform );
 331                 $s = str_replace( " ", "_", $s );
 332                 return $s;
 333         }
 334
 335         # Get prefixed title with spaces
 336         # This is the form usually used for display
 337         function getPrefixedText()
 338         {
 339                 if ( empty( $this->mPrefixedText ) ) {
 340                         $s = $this->prefix( $this->mTextform );
 341                         $s = str_replace( "_", " ", $s );
 342                         $this->mPrefixedText = $s;
 343                 }
 344                 return $this->mPrefixedText;
 345         }
 346
 347         # Get a URL-encoded title (not an actual URL) including interwiki
 348         function getPrefixedURL()
 349         {
 350                 $s = $this->prefix( $this->mDbkeyform );
 351                 $s = str_replace( " ", "_", $s );
 352
 353                 $s = wfUrlencode ( $s ) ;
 354
 355                 # Cleaning up URL to make it look nice -- is this safe?
 356                 $s = preg_replace( "/%3[Aa]/", ":", $s );
 357                 $s = preg_replace( "/%2[Ff]/", "/", $s );
 358                 $s = str_replace( "%28", "(", $s );
 359                 $s = str_replace( "%29", ")", $s );
 360
 361                 return $s;
 362         }
 363
 364         # Get a real URL referring to this title, with interwiki link and fragment
 365         function getFullURL( $query = "" )
 366         {
 367                 global $wgLang, $wgArticlePath, $wgServer, $wgScript;
 368
 369                 if ( "" == $this->mInterwiki ) {
 370                         $p = $wgArticlePath;
 371                         return $wgServer . $this->getLocalUrl( $query );
 372                 }
 373
 374                 $p = $this->getInterwikiLink( $this->mInterwiki );
 375                 $n = $wgLang->getNsText( $this->mNamespace );
 376                 if ( "" != $n ) { $n .= ":"; }
 377                 $u = str_replace( "$1", $n . $this->mUrlform, $p );
 378                 return $u;
 379         }
 380
 381         # Get a URL with an optional query string, no fragment
 382         # * If $query=="", it will use $wgArticlePath
 383         # * Returns a full for an interwiki link, loses any query string
 384         # * Optionally adds the server and escapes for HTML
 385         # * Setting $query to "-" makes an old-style URL with nothing in the
 386         #   query except a title
 387
 388         function getURL() {
 389                 die( "Call to obsolete obsolete function Title::getURL()" );
 390         }
 391
 392         function getLocalURL( $query = "" )
 393         {
 394                 global $wgLang, $wgArticlePath, $wgScript;
 395
 396                 if ( $this->isExternal() ) {
 397                         return $this->getFullURL();
 398                 }
 399
 400                 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
 401                 if ( $query == "" ) {
 402                         $url = str_replace( "$1", $dbkey, $wgArticlePath );
 403                 } else {
 404                         if ( $query == "-" ) {
 405                                 $query = "";
 406                         }
 407                         if ( $wgScript != "" ) {
 408                                 $url = "{$wgScript}?title={$dbkey}&{$query}";
 409                         } else {
 410                                 # Top level wiki
 411                                 $url = "/{$dbkey}?{$query}";
 412                         }
 413                 }
 414                 return $url;
 415         }
 416
 417         function escapeLocalURL( $query = "" ) {
 418                 return wfEscapeHTML( $this->getLocalURL( $query ) );
 419         }
 420
 421         function escapeFullURL( $query = "" ) {
 422                 return wfEscapeHTML( $this->getFullURL( $query ) );
 423         }
 424
 425         function getInternalURL( $query = "" ) {
 426                 # Used in various Squid-related code, in case we have a different
 427                 # internal hostname for the server than the exposed one.
 428                 global $wgInternalServer;
 429                 return $wgInternalServer . $this->getLocalURL( $query );
 430         }
 431
 432         # Get the edit URL, or a null string if it is an interwiki link
 433         function getEditURL()
 434         {
 435                 global $wgServer, $wgScript;
 436
 437                 if ( "" != $this->mInterwiki ) { return ""; }
 438                 $s = $this->getLocalURL( "action=edit" );
 439
 440                 return $s;
 441         }
 442
 443         # Get HTML-escaped displayable text
 444         # For the title field in <a> tags
 445         function getEscapedText()
 446         {
 447                 return wfEscapeHTML( $this->getPrefixedText() );
 448         }
 449
 450         # Is the title interwiki?
 451         function isExternal() { return ( "" != $this->mInterwiki ); }
 452
 453         # Does the title correspond to a protected article?
 454         function isProtected()
 455         {
 456                 if ( -1 == $this->mNamespace ) { return true; }
 457                 $a = $this->getRestrictions();
 458                 if ( in_array( "sysop", $a ) ) { return true; }
 459                 return false;
 460         }
 461
 462         # Is the page a log page, i.e. one where the history is messed up by
 463         # LogPage.php? This used to be used for suppressing diff links in recent
 464         # changes, but now that's done by setting a flag in the recentchanges
 465         # table. Hence, this probably is no longer used.
 466         function isLog()
 467         {
 468                 if ( $this->mNamespace != Namespace::getWikipedia() ) {
 469                         return false;
 470                 }
 471                 if ( ( 0 == strcmp( wfMsg( "uploadlogpage" ), $this->mDbkeyform ) ) ||
 472                   ( 0 == strcmp( wfMsg( "dellogpage" ), $this->mDbkeyform ) ) ) {
 473                         return true;
 474                 }
 475                 return false;
 476         }
 477
 478         # Is $wgUser is watching this page?
 479         function userIsWatching()
 480         {
 481                 global $wgUser;
 482
 483                 if ( -1 == $this->mNamespace ) { return false; }
 484                 if ( 0 == $wgUser->getID() ) { return false; }
 485
 486                 return $wgUser->isWatched( $this );
 487         }
 488
 489         # Can $wgUser edit this page?
 490         function userCanEdit()
 491         {
 492                 global $wgUser;
 493                 if ( -1 == $this->mNamespace ) { return false; }
 494                 if ( NS_MEDIAWIKI == $this->mNamespace && !$wgUser->isSysop() ) { return false; }
 495                 # if ( 0 == $this->getArticleID() ) { return false; }
 496                 if ( $this->mDbkeyform == "_" ) { return false; }
 497                 # protect global styles and js
 498                 if ( NS_MEDIAWIKI == $this->mNamespace
 499                      && preg_match("/\\.(css|js)$/", $this->mTextform )
 500                      && !$wgUser->isSysop() )
 501                 { return false; }
 502                 //if ( $this->isCssJsSubpage() and !$this->userCanEditCssJsSubpage() ) { return false; }
 503                 # protect css/js subpages of user pages
 504                 # XXX: this might be better using restrictions
 505                 # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
 506                 if( Namespace::getUser() == $this->mNamespace
 507                         and preg_match("/\\.(css|js)$/", $this->mTextform )
 508                         and !$wgUser->isSysop()
 509                         and !preg_match("/^".preg_quote($wgUser->getName(), '/')."/", $this->mTextform) )
 510                 { return false; }
 511                 $ur = $wgUser->getRights();
 512                 foreach ( $this->getRestrictions() as $r ) {
 513                         if ( "" != $r && ( ! in_array( $r, $ur ) ) ) {
 514                                 return false;
 515                         }
 516                 }
 517                 return true;
 518         }
 519
 520         function userCanRead() {
 521                 global $wgUser;
 522                 global $wgWhitelistRead;
 523
 524                 if( 0 != $wgUser->getID() ) return true;
 525                 if( !is_array( $wgWhitelistRead ) ) return true;
 526
 527                 $name = $this->getPrefixedText();
 528                 if( in_array( $name, $wgWhitelistRead ) ) return true;
 529
 530                 # Compatibility with old settings
 531                 if( $this->getNamespace() == NS_MAIN ) {
 532                         if( in_array( ":" . $name, $wgWhitelistRead ) ) return true;
 533                 }
 534                 return false;
 535         }
 536
 537         function isCssJsSubpage() {
 538                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.(css|js)$/", $this->mTextform ) );
 539         }
 540         function isCssSubpage() {
 541                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.css$/", $this->mTextform ) );
 542         }
 543         function isJsSubpage() {
 544                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.js$/", $this->mTextform ) );
 545         }
 546         function userCanEditCssJsSubpage() {
 547                 # protect css/js subpages of user pages
 548                 # XXX: this might be better using restrictions
 549                 global $wgUser;
 550                 return ( $wgUser->isSysop() or preg_match("/^".preg_quote($wgUser->getName())."/", $this->mTextform) );
 551         }
 552
 553         # Accessor/initialisation for mRestrictions
 554         function getRestrictions()
 555         {
 556                 $id = $this->getArticleID();
 557                 if ( 0 == $id ) { return array(); }
 558
 559                 if ( ! $this->mRestrictionsLoaded ) {
 560                         $res = wfGetSQL( "cur", "cur_restrictions", "cur_id=$id" );
 561                         $this->mRestrictions = explode( ",", trim( $res ) );
 562                         $this->mRestrictionsLoaded = true;
 563                 }
 564                 return $this->mRestrictions;
 565         }
 566
 567         # Is there a version of this page in the deletion archive?
 568         function isDeleted() {
 569                 $ns = $this->getNamespace();
 570                 $t = wfStrencode( $this->getDBkey() );
 571                 $sql = "SELECT COUNT(*) AS n FROM archive WHERE ar_namespace=$ns AND ar_title='$t'";
 572                 if( $res = wfQuery( $sql, DB_READ ) ) {
 573                         $s = wfFetchObject( $res );
 574                         return $s->n;
 575                 }
 576                 return 0;
 577         }
 578
 579         # Get the article ID from the link cache
 580         # Used very heavily, e.g. in Parser::replaceInternalLinks()
 581         function getArticleID()
 582         {
 583                 global $wgLinkCache;
 584
 585                 if ( -1 != $this->mArticleID ) { return $this->mArticleID; }
 586                 $this->mArticleID = $wgLinkCache->addLinkObj( $this );
 587                 return $this->mArticleID;
 588         }
 589
 590         # This clears some fields in this object, and clears any associated keys in the
 591         # "bad links" section of $wgLinkCache. This is called from Article::insertNewArticle()
 592         # to allow loading of the new cur_id. It's also called from Article::doDeleteArticle()
 593         function resetArticleID( $newid )
 594         {
 595                 global $wgLinkCache;
 596                 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
 597
 598                 if ( 0 == $newid ) { $this->mArticleID = -1; }
 599                 else { $this->mArticleID = $newid; }
 600                 $this->mRestrictionsLoaded = false;
 601                 $this->mRestrictions = array();
 602         }
 603
 604         # Updates cur_touched
 605         # Called from LinksUpdate.php
 606         function invalidateCache() {
 607                 $now = wfTimestampNow();
 608                 $ns = $this->getNamespace();
 609                 $ti = wfStrencode( $this->getDBkey() );
 610                 $sql = "UPDATE cur SET cur_touched='$now' WHERE cur_namespace=$ns AND cur_title='$ti'";
 611                 return wfQuery( $sql, DB_WRITE, "Title::invalidateCache" );
 612         }
 613
 614         # Prefixes some arbitrary text with the namespace or interwiki prefix of this object
 615         /* private */ function prefix( $name )
 616         {
 617                 global $wgLang;
 618
 619                 $p = "";
 620                 if ( "" != $this->mInterwiki ) {
 621                         $p = $this->mInterwiki . ":";
 622                 }
 623                 if ( 0 != $this->mNamespace ) {
 624                         $p .= $wgLang->getNsText( $this->mNamespace ) . ":";
 625                 }
 626                 return $p . $name;
 627         }
 628
 629         # Secure and split - main initialisation function for this object
 630         #
 631         # Assumes that mDbkeyform has been set, and is urldecoded
 632     # and uses undersocres, but not otherwise munged.  This function
 633     # removes illegal characters, splits off the winterwiki and
 634     # namespace prefixes, sets the other forms, and canonicalizes
 635     # everything.
 636         #
 637         /* private */ function secureAndSplit()
 638         {
 639                 global $wgLang, $wgLocalInterwiki, $wgCapitalLinks;
 640                 $fname = "Title::secureAndSplit";
 641                 wfProfileIn( $fname );
 642
 643                 static $imgpre = false;
 644                 static $rxTc = false;
 645
 646                 # Initialisation
 647                 if ( $imgpre === false ) {
 648                         $imgpre = ":" . $wgLang->getNsText( Namespace::getImage() ) . ":";
 649                         # % is needed as well
 650                         $rxTc = "/[^" . Title::legalChars() . "]/";
 651                 }
 652
 653                 $this->mInterwiki = $this->mFragment = "";
 654                 $this->mNamespace = $this->mDefaultNamespace; # Usually NS_MAIN
 655
 656                 # Clean up whitespace
 657                 #
 658                 $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform );
 659                 $t = preg_replace( '/^_*(.*?)_*$/', '$1', $t );
 660
 661                 if ( "" == $t ) {
 662                         wfProfileOut( $fname );
 663                         return false;
 664                 }
 665
 666                 $this->mDbkeyform = $t;
 667                 $done = false;
 668
 669                 # :Image: namespace
 670                 if ( 0 == strncasecmp( $imgpre, $t, strlen( $imgpre ) ) ) {
 671                         $t = substr( $t, 1 );
 672                 }
 673
 674                 # Initial colon indicating main namespace
 675                 if ( ":" == $t{0} ) {
 676                         $r = substr( $t, 1 );
 677                         $this->mNamespace = NS_MAIN;
 678                 } else {
 679                         # Namespace or interwiki prefix
 680                         if ( preg_match( "/^(.+?)_*:_*(.*)$/", $t, $m ) ) {
 681                                 #$p = strtolower( $m[1] );
 682                                 $p = $m[1];
 683                                 $lowerNs = strtolower( $p );
 684                                 if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
 685                                         # Canonical namespace
 686                                         $t = $m[2];
 687                                         $this->mNamespace = $ns;
 688                                 } elseif ( $ns = $wgLang->getNsIndex( $lowerNs )) {
 689                                         # Ordinary namespace
 690                                         $t = $m[2];
 691                                         $this->mNamespace = $ns;
 692                                 } elseif ( $this->getInterwikiLink( $p ) ) {
 693                                         # Interwiki link
 694                                         $t = $m[2];
 695                                         $this->mInterwiki = $p;
 696
 697                                         if ( !preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/", $t, $m ) ) {
 698                                                 $done = true;
 699                                         } elseif($this->mInterwiki != $wgLocalInterwiki) {
 700                                                 $done = true;
 701                                         }
 702                                 }
 703                         }
 704                         $r = $t;
 705                 }
 706
 707                 # Redundant interwiki prefix to the local wiki
 708                 if ( 0 == strcmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
 709                         $this->mInterwiki = "";
 710                 }
 711                 # We already know that some pages won't be in the database!
 712                 #
 713                 if ( "" != $this->mInterwiki || -1 == $this->mNamespace ) {
 714                         $this->mArticleID = 0;
 715                 }
 716                 $f = strstr( $r, "#" );
 717                 if ( false !== $f ) {
 718                         $this->mFragment = substr( $f, 1 );
 719                         $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
 720                 }
 721
 722                 # Reject illegal characters.
 723                 #
 724                 if( preg_match( $rxTc, $r ) ) {
 725                         return false;
 726                 }
 727
 728                 # "." and ".." conflict with the directories of those namesa
 729                 if ( strpos( $r, "." ) !== false &&
 730                      ( $r === "." || $r === ".." ||
 731                        strpos( $r, "./" ) === 0 ||
 732                        strpos( $r, "/./" !== false ) ||
 733                        strpos( $r, "/../" !== false ) ) )
 734                 {
 735                         return false;
 736                 }
 737
 738                 # Initial capital letter
 739                 if( $wgCapitalLinks && $this->mInterwiki == "") {
 740                         $t = $wgLang->ucfirst( $r );
 741                 }
 742
 743                 # Fill fields
 744                 $this->mDbkeyform = $t;
 745                 $this->mUrlform = wfUrlencode( $t );
 746
 747                 $this->mTextform = str_replace( "_", " ", $t );
 748
 749                 wfProfileOut( $fname );
 750                 return true;
 751         }
 752
 753         # Get a title object associated with the talk page of this article
 754         function getTalkPage() {
 755                 return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
 756         }
 757
 758         # Get a title object associated with the subject page of this talk page
 759         function getSubjectPage() {
 760                 return Title::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
 761         }
 762
 763         # Get an array of Title objects linking to this title
 764         # Also stores the IDs in the link cache
 765         function getLinksTo() {
 766                 global $wgLinkCache;
 767                 $id = $this->getArticleID();
 768                 $sql = "SELECT cur_namespace,cur_title,cur_id FROM cur,links WHERE l_from=cur_id AND l_to={$id}";
 769                 $res = wfQuery( $sql, DB_READ, "Title::getLinksTo" );
 770                 $retVal = array();
 771                 if ( wfNumRows( $res ) ) {
 772                         while ( $row = wfFetchObject( $res ) ) {
 773                                 if ( $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title ) ) {
 774                                         $wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
 775                                         $retVal[] = $titleObj;
 776                                 }
 777                         }
 778                 }
 779                 wfFreeResult( $res );
 780                 return $retVal;
 781         }
 782
 783         # Get an array of Title objects linking to this non-existent title
 784         # Also stores the IDs in the link cache
 785         function getBrokenLinksTo() {
 786                 global $wgLinkCache;
 787                 $encTitle = wfStrencode( $this->getPrefixedDBkey() );
 788                 $sql = "SELECT cur_namespace,cur_title,cur_id FROM brokenlinks,cur " .
 789                   "WHERE bl_from=cur_id AND bl_to='$encTitle'";
 790                 $res = wfQuery( $sql, DB_READ, "Title::getBrokenLinksTo" );
 791                 $retVal = array();
 792                 if ( wfNumRows( $res ) ) {
 793                         while ( $row = wfFetchObject( $res ) ) {
 794                                 $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title );
 795                                 $wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
 796                                 $retVal[] = $titleObj;
 797                         }
 798                 }
 799                 wfFreeResult( $res );
 800                 return $retVal;
 801         }
 802
 803         function getSquidURLs() {
 804                 return array(
 805                         $this->getInternalURL(),
 806                         $this->getInternalURL( "action=history" )
 807                 );
 808         }
 809
 810         function moveNoAuth( &$nt ) {
 811                 return $this->moveTo( $nt, false );
 812         }
 813
 814         # Move a title to a new location
 815         # Returns true on success, message name on failure
 816         # auth indicates whether wgUser's permissions should be checked
 817         function moveTo( &$nt, $auth = true ) {
 818                 if( !$this or !$nt ) {
 819                         return "badtitletext";
 820                 }
 821
 822                 $fname = "Title::move";
 823                 $oldid = $this->getArticleID();
 824                 $newid = $nt->getArticleID();
 825
 826                 if ( strlen( $nt->getDBkey() ) < 1 ) {
 827                         return "articleexists";
 828                 }
 829                 if ( ( ! Namespace::isMovable( $this->getNamespace() ) ) ||
 830                          ( "" == $this->getDBkey() ) ||
 831                          ( "" != $this->getInterwiki() ) ||
 832                          ( !$oldid ) ||
 833                      ( ! Namespace::isMovable( $nt->getNamespace() ) ) ||
 834                          ( "" == $nt->getDBkey() ) ||
 835                          ( "" != $nt->getInterwiki() ) ) {
 836                         return "badarticleerror";
 837                 }
 838
 839                 if ( $auth && ( !$this->userCanEdit() || !$nt->userCanEdit() ) ) {
 840                         return "protectedpage";
 841                 }
 842
 843                 # The move is allowed only if (1) the target doesn't exist, or
 844                 # (2) the target is a redirect to the source, and has no history
 845                 # (so we can undo bad moves right after they're done).
 846
 847                 if ( 0 != $newid ) { # Target exists; check for validity
 848                         if ( ! $this->isValidMoveTarget( $nt ) ) {
 849                                 return "articleexists";
 850                         }
 851                         $this->moveOverExistingRedirect( $nt );
 852                 } else { # Target didn't exist, do normal move.
 853                         $this->moveToNewTitle( $nt, $newid );
 854                 }
 855
 856                 # Update watchlists
 857
 858                 $oldnamespace = $this->getNamespace() & ~1;
 859                 $newnamespace = $nt->getNamespace() & ~1;
 860                 $oldtitle = $this->getDBkey();
 861                 $newtitle = $nt->getDBkey();
 862
 863                 if( $oldnamespace != $newnamespace && $oldtitle != $newtitle ) {
 864                         WatchedItem::duplicateEntries( $this, $nt );
 865                 }
 866
 867                 # Update search engine
 868                 $u = new SearchUpdate( $oldid, $nt->getPrefixedDBkey() );
 869                 $u->doUpdate();
 870                 $u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), "" );
 871                 $u->doUpdate();
 872
 873                 return true;
 874         }
 875
 876         # Move page to title which is presently a redirect to the source page
 877
 878         /* private */ function moveOverExistingRedirect( &$nt )
 879         {
 880                 global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
 881                 $fname = "Title::moveOverExistingRedirect";
 882                 $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
 883
 884         $now = wfTimestampNow();
 885         $won = wfInvertTimestamp( $now );
 886                 $newid = $nt->getArticleID();
 887                 $oldid = $this->getArticleID();
 888
 889                 # Change the name of the target page:
 890                 wfUpdateArray(
 891                         /* table */ 'cur',
 892                         /* SET */ array(
 893                                 'cur_touched' => $now,
 894                                 'cur_namespace' => $nt->getNamespace(),
 895                                 'cur_title' => $nt->getDBkey()
 896                         ),
 897                         /* WHERE */ array( 'cur_id' => $oldid ),
 898                         $fname
 899                 );
 900                 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
 901
 902                 # Repurpose the old redirect. We don't save it to history since
 903                 # by definition if we've got here it's rather uninteresting.
 904
 905                 $redirectText = $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n";
 906                 wfUpdateArray(
 907                         /* table */ 'cur',
 908                         /* SET */ array(
 909                                 'cur_touched' => $now,
 910                                 'cur_timestamp' => $now,
 911                                 'inverse_timestamp' => $won,
 912                                 'cur_namespace' => $this->getNamespace(),
 913                                 'cur_title' => $this->getDBkey(),
 914                                 'cur_text' => $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n",
 915                                 'cur_comment' => $comment,
 916                                 'cur_user' => $wgUser->getID(),
 917                                 'cur_minor_edit' => 0,
 918                                 'cur_counter' => 0,
 919                                 'cur_restrictions' => '',
 920                                 'cur_user_text' => $wgUser->getName(),
 921                                 'cur_is_redirect' => 1,
 922                                 'cur_is_new' => 1
 923                         ),
 924                         /* WHERE */ array( 'cur_id' => $newid ),
 925                         $fname
 926                 );
 927
 928                 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
 929
 930                 # Fix the redundant names for the past revisions of the target page.
 931                 # The redirect should have no old revisions.
 932                 wfUpdateArray(
 933                         /* table */ 'old',
 934                         /* SET */ array(
 935                                 'old_namespace' => $nt->getNamespace(),
 936                                 'old_title' => $nt->getDBkey(),
 937                         ),
 938                         /* WHERE */ array(
 939                                 'old_namespace' => $this->getNamespace(),
 940                                 'old_title' => $this->getDBkey(),
 941                         ),
 942                         $fname
 943                 );
 944
 945                 RecentChange::notifyMoveOverRedirect( $now, $this, $nt, $wgUser, $comment );
 946
 947                 # Swap links
 948
 949                 # Load titles and IDs
 950                 $linksToOld = $this->getLinksTo();
 951                 $linksToNew = $nt->getLinksTo();
 952
 953                 # Delete them all
 954                 $sql = "DELETE FROM links WHERE l_to=$oldid OR l_to=$newid";
 955                 wfQuery( $sql, DB_WRITE, $fname );
 956
 957                 # Reinsert
 958                 if ( count( $linksToOld ) || count( $linksToNew )) {
 959                         $sql = "INSERT INTO links (l_from,l_to) VALUES ";
 960                         $first = true;
 961
 962                         # Insert links to old title
 963                         foreach ( $linksToOld as $linkTitle ) {
 964                                 if ( $first ) {
 965                                         $first = false;
 966                                 } else {
 967                                         $sql .= ",";
 968                                 }
 969                                 $id = $linkTitle->getArticleID();
 970                                 $sql .= "($id,$newid)";
 971                         }
 972
 973                         # Insert links to new title
 974                         foreach ( $linksToNew as $linkTitle ) {
 975                                 if ( $first ) {
 976                                         $first = false;
 977                                 } else {
 978                                         $sql .= ",";
 979                                 }
 980                                 $id = $linkTitle->getArticleID();
 981                                 $sql .= "($id, $oldid)";
 982                         }
 983
 984                         wfQuery( $sql, DB_WRITE, $fname );
 985                 }
 986
 987                 # Now, we record the link from the redirect to the new title.
 988                 # It should have no other outgoing links...
 989                 $sql = "DELETE FROM links WHERE l_from={$newid}";
 990                 wfQuery( $sql, DB_WRITE, $fname );
 991                 $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
 992                 wfQuery( $sql, DB_WRITE, $fname );
 993
 994                 # Clear linkscc
 995                 LinkCache::linksccClearLinksTo( $oldid );
 996                 LinkCache::linksccClearLinksTo( $newid );
 997
 998                 # Purge squid
 999                 if ( $wgUseSquid ) {
1000                         $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
1001                         $u = new SquidUpdate( $urls );
1002                         $u->doUpdate();
1003                 }
1004         }
1005
1006         # Move page to non-existing title.
1007         # Sets $newid to be the new article ID
1008
1009         /* private */ function moveToNewTitle( &$nt, &$newid )
1010         {
1011                 global $wgUser, $wgLinkCache, $wgUseSquid;
1012                 $fname = "MovePageForm::moveToNewTitle";
1013                 $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
1014
1015                 $now = wfTimestampNow();
1016                 $won = wfInvertTimestamp( $now );
1017                 $newid = $nt->getArticleID();
1018                 $oldid = $this->getArticleID();
1019
1020                 # Rename cur entry
1021                 wfUpdateArray(
1022                         /* table */ 'cur',
1023                         /* SET */ array(
1024                                 'cur_touched' => $now,
1025                                 'cur_namespace' => $nt->getNamespace(),
1026                                 'cur_title' => $nt->getDBkey()
1027                         ),
1028                         /* WHERE */ array( 'cur_id' => $oldid ),
1029                         $fname
1030                 );
1031
1032                 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1033
1034                 # Insert redirct
1035                 wfInsertArray( 'cur', array(
1036                         'cur_namespace' => $this->getNamespace(),
1037                         'cur_title' => $this->getDBkey(),
1038                         'cur_comment' => $comment,
1039                         'cur_user' => $wgUser->getID(),
1040                         'cur_user_text' => $wgUser->getName(),
1041                         'cur_timestamp' => $now,
1042                         'inverse_timestamp' => $won,
1043                         'cur_touched' => $now,
1044                         'cur_is_redirect' => 1,
1045                         'cur_is_new' => 1,
1046                         'cur_text' => "#REDIRECT [[" . $nt->getPrefixedText() . "]]\n" )
1047                 );
1048                 $newid = wfInsertId();
1049                 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1050
1051                 # Rename old entries
1052                 wfUpdateArray(
1053                         /* table */ 'old',
1054                         /* SET */ array(
1055                                 'old_namespace' => $nt->getNamespace(),
1056                                 'old_title' => $nt->getDBkey()
1057                         ),
1058                         /* WHERE */ array(
1059                                 'old_namespace' => $this->getNamespace(),
1060                                 'old_title' => $this->getDBkey()
1061                         ), $fname
1062                 );
1063
1064                 # Record in RC
1065                 RecentChange::notifyMoveToNew( $now, $this, $nt, $wgUser, $comment );
1066
1067                 # Purge squid and linkscc as per article creation
1068                 Article::onArticleCreate( $nt );
1069
1070                 # Any text links to the old title must be reassigned to the redirect
1071                 $sql = "UPDATE links SET l_to={$newid} WHERE l_to={$oldid}";
1072                 wfQuery( $sql, DB_WRITE, $fname );
1073                 LinkCache::linksccClearLinksTo( $oldid );
1074
1075                 # Record the just-created redirect's linking to the page
1076                 $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
1077                 wfQuery( $sql, DB_WRITE, $fname );
1078
1079                 # Non-existent target may have had broken links to it; these must
1080                 # now be removed and made into good links.
1081                 $update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
1082                 $update->fixBrokenLinks();
1083
1084                 # Purge old title from squid
1085                 # The new title, and links to the new title, are purged in Article::onArticleCreate()
1086                 $titles = $nt->getLinksTo();
1087                 if ( $wgUseSquid ) {
1088                         $urls = $this->getSquidURLs();
1089                         foreach ( $titles as $linkTitle ) {
1090                                 $urls[] = $linkTitle->getInternalURL();
1091                         }
1092                         $u = new SquidUpdate( $urls );
1093                         $u->doUpdate();
1094                 }
1095         }
1096
1097         # Checks if $this can be moved to $nt
1098         # Both titles must exist in the database, otherwise it will blow up
1099         function isValidMoveTarget( $nt )
1100         {
1101                 $fname = "Title::isValidMoveTarget";
1102
1103                 # Is it a redirect?
1104                 $id  = $nt->getArticleID();
1105                 $sql = "SELECT cur_is_redirect,cur_text FROM cur " .
1106                   "WHERE cur_id={$id}";
1107                 $res = wfQuery( $sql, DB_READ, $fname );
1108                 $obj = wfFetchObject( $res );
1109
1110                 if ( 0 == $obj->cur_is_redirect ) {
1111                         # Not a redirect
1112                         return false;
1113                 }
1114
1115                 # Does the redirect point to the source?
1116                 if ( preg_match( "/\\[\\[\\s*([^\\]]*)]]/", $obj->cur_text, $m ) ) {
1117                         $redirTitle = Title::newFromText( $m[1] );
1118                         if ( 0 != strcmp( $redirTitle->getPrefixedDBkey(), $this->getPrefixedDBkey() ) ) {
1119                                 return false;
1120                         }
1121                 }
1122
1123                 # Does the article have a history?
1124                 $row = wfGetArray( 'old', array( 'old_id' ), array(
1125                         'old_namespace' => $nt->getNamespace(),
1126                         'old_title' => $nt->getDBkey() )
1127                 );
1128
1129                 # Return true if there was no history
1130                 return $row === false;
1131         }
1132
1133         # Create a redirect, fails if the title already exists, does not notify RC
1134         # Returns success
1135         function createRedirect( $dest, $comment ) {
1136                 global $wgUser;
1137                 if ( $this->getArticleID() ) {
1138                         return false;
1139                 }
1140
1141                 $now = wfTimestampNow();
1142                 $won = wfInvertTimestamp( $now );
1143
1144                 wfInsertArray( 'cur', array(
1145                         'cur_namespace' => $this->getNamespace(),
1146                         'cur_title' => $this->getDBkey(),
1147                         'cur_comment' => $comment,
1148                         'cur_user' => $wgUser->getID(),
1149                         'cur_user_text' => $wgUser->getName(),
1150                         'cur_timestamp' => $now,
1151                         'inverse_timestamp' => $won,
1152                         'cur_touched' => $now,
1153                         'cur_is_redirect' => 1,
1154                         'cur_is_new' => 1,
1155                         'cur_text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n"
1156                 ));
1157                 $newid = wfInsertId();
1158                 $this->resetArticleID( $newid );
1159
1160                 # Link table
1161                 if ( $dest->getArticleID() ) {
1162                         wfInsertArray( 'links', array(
1163                                 'l_to' => $dest->getArticleID(),
1164                                 'l_from' => $newid
1165                         ));
1166                 } else {
1167                         wfInsertArray( 'brokenlinks', array(
1168                                 'bl_to' => $dest->getPrefixedDBkey(),
1169                                 'bl_from' => $newid
1170                         ));
1171                 }
1172
1173                 Article::onArticleCreate( $this );
1174                 return true;
1175         }
1176
1177         # Get categories to wich belong this title and return an array of
1178         # categories names.
1179         function getParentCategories( )
1180         {
1181                 global $wgLang,$wgUser;
1182
1183                 #$titlekey = wfStrencode( $this->getArticleID() );
1184                 $titlekey = $this->getArticleId();
1185                 $cns = Namespace::getCategory();
1186                 $sk =& $wgUser->getSkin();
1187                 $parents = array();
1188
1189                 # get the parents categories of this title from the database
1190                 $sql = "SELECT DISTINCT cur_id FROM cur,categorylinks
1191                         WHERE cl_from='$titlekey' AND cl_to=cur_title AND cur_namespace='$cns'
1192                                 ORDER BY cl_sortkey" ;
1193                 $res = wfQuery ( $sql, DB_READ ) ;
1194
1195                 if(wfNumRows($res) > 0) {
1196                         while ( $x = wfFetchObject ( $res ) ) $data[] = $x ;
1197                         wfFreeResult ( $res ) ;
1198                 } else {
1199                         $data = '';
1200                 }
1201                 return $data;
1202         }
1203
1204         # will get the parents and grand-parents
1205         # TODO : not sure what's happening when a loop happen like:
1206         #       Encyclopedia > Astronomy > Encyclopedia
1207         function getAllParentCategories(&$stack)
1208         {
1209                 global $wgUser,$wgLang;
1210                 $result = '';
1211
1212                 # getting parents
1213                 $parents = $this->getParentCategories( );
1214
1215                 if($parents == '')
1216                 {
1217                         # The current element has no more parent so we dump the stack
1218                         # and make a clean line of categories
1219                         $sk =& $wgUser->getSkin() ;
1220
1221                         foreach ( array_reverse($stack) as $child => $parent )
1222                         {
1223                                 # make a link of that parent
1224                                 $result .= $sk->makeLink($wgLang->getNSText ( Namespace::getCategory() ).":".$parent,$parent);
1225                                 $result .= ' &gt; ';
1226                                 $lastchild = $child;
1227                         }
1228                         # append the last child.
1229                         # TODO : We should have a last child unless there is an error in the
1230                         # "categorylinks" table.
1231                         if(isset($lastchild)) { $result .= $lastchild; }
1232
1233                         $result .= "<br/>\n";
1234
1235                         # now we can empty the stack
1236                         $stack = array();
1237
1238                 } else {
1239                         # look at parents of current category
1240                         foreach($parents as $parent)
1241                         {
1242                                 # create a title object for the parent
1243                                 $tpar = Title::newFromID($parent->cur_id);
1244                                 # add it to the stack
1245                                 $stack[$this->getText()] = $tpar->getText();
1246                                 # grab its parents
1247                                 $result .= $tpar->getAllParentCategories($stack);
1248                         }
1249                 }
1250
1251                 if(isset($result)) { return $result; }
1252                 else { return ''; };
1253         }
1254
1255
1256 }
1257 ?>