3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['contact', 'home', 'projects']; [$a[2], $a[1]] = $a; var_export($a);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 0 => 'contact', 1 => 'home', 2 => 'contact', )
preferences:
125.78 ms | 407 KiB | 5 Q