3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Concrete5_Helper_Foo { public static function get() { return self::getFirstName(); } public static function getFirstName() { echo "helper_foo"; } } class Foo extends Concrete5_Helper_Foo { public static function getFirstName() { echo "foo"; } } var_dump(Concrete5_Helper_Foo::get()); var_dump(Foo::get());

preferences:
39.31 ms | 402 KiB | 5 Q