3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test() { echo "TEST\n"; } $a = ['x', 'y', 'z']; $a[]++; //test() =& $a; var_dump($a);
Output for 8.1.34, 8.2.27 - 8.2.30, 8.3.0 - 8.3.29, 8.4.1 - 8.4.16, 8.5.0 - 8.5.1
array(4) { [0]=> string(1) "x" [1]=> string(1) "y" [2]=> string(1) "z" [3]=> int(1) }
preferences:
57.3 ms | 406 KiB | 5 Q