3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = microtime(); for($i=0; $i < 1000; $i++) { rand(1,9999999); } echo $time = (microtime()-$time)/1000; $time = microtime(); for($i=0; $i < 1000; $i++) { mt_rand(1,9999999); } echo $time = (microtime()-$time)/1000;

preferences:
31.44 ms | 402 KiB | 5 Q