3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Concrete5_Helper_Foo { public static function get() { return self::getFirstName(); } protected $firstName = 'James'; public static function getFirstName() { return $firstName; } } class Foo extends Concrete5_Helper_Foo { protected $firstName = 'Chris'; } var_dump(get_class(Concrete5_Helper_Foo::get())); var_dump(get_class(Foo::get())); var_dump(get_class(Foo::get()->getFirstName()));

preferences:
40.56 ms | 402 KiB | 5 Q