3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3,4); $b = $a; $c = &$a; $b[] = 'f'; //$c[] = 'f'; echo 'a='.print_r($a, true)."\n"; echo 'b='.print_r($b, true)."\n"; echo 'c='.print_r($c, true)."\n";

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47.39 ms | 402 KiB | 5 Q