3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['foo']; array_unshift($array, 'bar'); array_unshift($array, 'baz'); var_dump($array); $array = ['foo']; array_unshift($array, 'bar', 'baz'); var_dump($array);
Output for 7.4.30, 8.1.23 - 8.1.28, 8.2.10 - 8.2.18, 8.3.0 - 8.3.6
array(3) { [0]=> string(3) "baz" [1]=> string(3) "bar" [2]=> string(3) "foo" } array(3) { [0]=> string(3) "bar" [1]=> string(3) "baz" [2]=> string(3) "foo" }
preferences:
72.37 ms | 402 KiB | 28 Q