3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { public $x=[1, 2, 3]; } $cycles = 10000; $t = microtime(true); for ($i=0;$i<$cycles;$i++) { $f = new foo; } $t = microtime(true); echo intval($t*1000);

preferences:
28.14 ms | 402 KiB | 5 Q