3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test1() { $s = microtime(true); for ($i = 0; $i < 1000000; $i++) { } return microtime(true) - $s; } function test2() { $s = microtime(true); $i = 0; while ($i < 1000000) { $i++; } return microtime(true) - $s; }

preferences:
32.76 ms | 402 KiB | 5 Q