3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('memory_limit',-1); $i=10000; $c=[]; $time_c=microtime(true); for($z=0;$z<$i;$z++){ array_push($c,...[0,1,2,3,4,5,6,7,8,9]); // $b[]=...[0,1,2,3,4,5,6,7,8,9]; } $time_c=microtime(true)-$time_c; print($time_c.' sec');

preferences:
22.12 ms | 402 KiB | 5 Q