3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo{ static $variable = array('func' => 'Foo::secondFunction'); public static function firstFunction(){ return "PHP 5.6!"; } public static function secondFunction(){ return "PHP 7!"; } } $variable = array('func' => 'firstFunction'); echo Foo::$variable['func']();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
PHP 7!
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
PHP 5.6!
preferences:
180.77 ms | 402 KiB | 198 Q