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•   
•  /** make sure we can call stripos **/
•  if (!function_exists('stripos')) {
•      // the offset param of preg_match is not supported below PHP 4.3.3
•      if (GESHI_PHP_PRE_433) {
•          /**
•           * @ignore
•           */
•          function stripos($haystack, $needle, $offset = null) {
•              if (!is_null($offset)) {
•                  $haystack = substr($haystack, $offset);
•              }
•              if (preg_match('/'. preg_quote($needle, '/') . '/', $haystack, $match, PREG_OFFSET_CAPTURE)) {
•                  return $match[0][1];