3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = microtime(true); $h = 0; for($i = 0; $i < 10000; $i++) { $h++; } $b = microtime(true); var_dump($b - $a); $a = microtime(true); $h = 0; foreach (range(1, 10000) as $index) { $h++; } $b = microtime(true); var_dump($b - $a);

preferences:
48.11 ms | 402 KiB | 5 Q