3v4l.org

run code in 300+ PHP versions simultaneously
<?php mb_internal_encoding('UTF-8'); $text = <<<TEXT Павел Дуров fsdf sdf sdf TEXT; $filter = ''; $filter = mb_strtolower($filter); $parts = mb_split('[\x00-\x20]+', $filter); $parts = array_map('trim', $parts); $parts = array_filter($parts); $parts = array_map('preg_quote', $parts); $filter = implode('.*', $parts); echo preg_match("~{$filter}~uis, $text)";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.1.70.0060.00917.04

preferences:
136.55 ms | 1394 KiB | 7 Q