3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a1 = ["foo" => "bar"]; $a2 = ["foo" => "baz"]; var_dump($a1 + $a2 == $a2 + $a1);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
bool(false)

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56.48 ms | 1009 KiB | 4 Q