3v4l.org

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

preferences:
65.78 ms | 402 KiB | 5 Q