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<?php class User { public function can($name) { return call_user_func(array($name, 'test')); } public static function __callStatic($name, $args) { return 'User::__callStatic'; } public function __call($name, $args) { return 'User::__call'; } } class Foo { public function can($name) { return call_user_func(array($name, 'test')); } public static function __callStatic($name, $args) { return 'Foo::__callStatic'; } public function __call($name, $args) { return 'Foo::__call?'; } } function can($name) { return call_user_func(array($name, 'test')); } $u = new User(); $f = new Foo(); var_dump($u->can('User')); var_dump($u->can('Foo')); var_dump($f->can('User')); var_dump($f->can('Foo')); var_dump(can('User')); var_dump(can('Foo'));