3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start = microtime(true); foreach (range(0, 10000) as $i) { } printf ('%.2f'.PHP_EOL, microtime(true) - $start); $start = microtime(true); for ($i = 0; $i < 10000; $i++) { } printf ('%.2f'.PHP_EOL, microtime(true) - $start);

preferences:
33.02 ms | 402 KiB | 5 Q