3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 2; $b= 3; $c = 56; $v = array(1=>$a, 2=>$b,3=>$c); print_r($v); unset($v[0]); print_r($v); echo $a;

preferences:
38.81 ms | 402 KiB | 5 Q