3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (PHP_VERSION != '5.3.6') { die("Incorrect version"); } function a($url) { preg_match('!(?:(\w+)://)?(?:(\w+)\:(\w+)@)?([^/:]+)?(?:\:(\d*))?([^#?]+)?(?:\?([^#]+))?(?:#(.+$))?!i', $url, $out); return $out; } function b($url) { $out = parse_url($url); return $out; } $i = 100000; $start = microtime(true); while (--$i) { $u[1] = a('example.com'); $u[2] = a('example.com/index.php'); $u[3] = a('example.com?foo=bar'); $u[4] = a('/index.php'); $u[5] = a('/index.php?foo=bar'); $u[6] = a('?foo=bar'); } print_r($u); echo microtime(true) - $start . "\n"; $i = 100000; $start = microtime(true); while (--$i) { $u[1] = b('example.com'); $u[2] = b('example.com/index.php'); $u[3] = b('example.com?foo=bar'); $u[4] = b('/index.php'); $u[5] = b('/index.php?foo=bar'); $u[6] = b('?foo=bar'); } print_r($u); echo microtime(true) - $start . "\n";

preferences:
34.17 ms | 402 KiB | 5 Q