/**
  * Check if two bits of wikitext have the same images
  * @param a First wiki-text to test
  * @param b Second wiki-text to test
  * @param altImageTags Array of alternative image regex to use such as imagen,...
  * @return True if the images are the same, and false otherwise
  */
 public static function haveSameImages($a, $b, $altImageTags = array())
 {
     preg_match_all(self::getImageRegex($altImageTags), $a, $matches);
     preg_match_all(self::getImageRegex($altImageTags), $b, $matches2);
     if (sizeof($matches) != sizeof($matches2)) {
         return false;
     }
     for ($n = 0; $n < sizeof($matches); $n++) {
         if (is_array($matches[$n])) {
             if (sizeof($matches[$n]) != sizeof($matches2[$n])) {
                 return false;
             }
             for ($m = 0; $m < sizeof($matches[$n]); $m++) {
                 $matches[$n][$m] = Wikitext::removeImageCaption($matches[$n][$m]);
                 $matches2[$n][$m] = Wikitext::removeImageCaption($matches2[$n][$m]);
                 if ($matches[$n][$m] != $matches2[$n][$m]) {
                     return false;
                 }
             }
         } else {
             $matches[$n][$m] = Wikitext::removeImageCaption($matches[$n][$m]);
             $matches2[$n][$m] = Wikitext::removeImageCaption($matches2[$n][$m]);
             if ($matches[$n] != $matches2[$n]) {
                 return false;
             }
         }
     }
     return true;
 }