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run code in 300+ PHP versions simultaneously
<?php class Beer { const NAME = 'Beer!'; public static function printed(){ echo 'static Beer:NAME = '. static::NAME . PHP_EOL; } } class Ale { const NAME = 'Ale!'; public static function printed(){ forward_static_call(array('Beer','printed')); call_user_func(array('Beer','printed')); } } Ale::printed(); echo '</pre>';

preferences:
31.23 ms | 402 KiB | 5 Q