Online PHP editor | refs for dq5v8

<?php $string = str_repeat("Iñtërnâtiônàlizætiøn", 100); echo strlen($string) . "\n"; $result = preg_match( '/\A(?: [\x00-\x7F]+ # ASCII | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 )*\z/x', $string ); echo "result: "; var_dump($result); echo "pcre.jit: "; var_dump(ini_get('pcre.jit')); echo "pcre.backtrack_limit: "; var_dump(ini_get('pcre.backtrack_limit')); echo "pcre.recursion_limit: "; var_dump(ini_get('pcre.recursion_limit')); if(defined('PREG_JIT_STACKLIMIT_ERROR')){ assert(preg_last_error() === PREG_JIT_STACKLIMIT_ERROR); }