Refactor array_intersect_key from ApiResult.php to GlobalFunctions.php

[lhc/web/wiklou.git] / includes / GlobalFunctions.php

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index b8916c2..219df38 100644 (file)
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -190,6 +190,37 @@ if ( !function_exists( 'array_diff_key' ) ) {
        }
 }
 
+if ( !function_exists( 'array_intersect_key' ) ) {
+       /**
+       * Exists in 5.1.0+
+       * Define our own array_intersect_key function
+       */
+       function array_intersect_key( $isec, $keys ) {
+               $argc = func_num_args();
+
+               if ( $argc > 2 ) {
+                       for ( $i = 1; $isec && $i < $argc; $i++ ) {
+                               $arr = func_get_arg( $i );
+
+                               foreach ( array_keys( $isec ) as $key ) {
+                                       if ( !isset( $arr[$key] ) )
+                                               unset( $isec[$key] );
+                               }
+                       }
+
+                       return $isec;
+               } else {
+                       $res = array();
+                       foreach ( array_keys( $isec ) as $key ) {
+                               if ( isset( $keys[$key] ) )
+                                       $res[$key] = $isec[$key];
+                       }
+
+                       return $res;
+               }
+       }
+}
+
 // Support for Wietse Venema's taint feature
 if ( !function_exists( 'istainted' ) ) {
        function istainted( $var ) {