3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ "foo" => "bar", "bar" => "foo", ];
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/h02id on line 2
Process exited with code 255.
preferences:
43.04 ms | 407 KiB | 5 Q