3v4l.org

run code in 300+ PHP versions simultaneously
<?php $p1 = 5; $p2 = 5; function test($param1, &$param2) { $param1 = 2; $param2 = 2; } test($p1, $p2); //Wyjaśnij cos się stało :) //Explain what happend here :) ? echo "p1: ".$p1. "<br />p2: ". $p2;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
p1: 5<br />p2: 2
preferences:
268.92 ms | 406 KiB | 383 Q