3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x=array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20); $size = count($x); print_r($size); for($i=0;$i<=4;$i++){ $a[] = $x[$i]; } print_r($a); ?>

preferences:
48.38 ms | 402 KiB | 5 Q