Online PHP editor | refs for SYqlB

<?php class A { static function b() { return 'soy b static'; } function a() { return 'soy a'; } } $z=(new a)->a(); var_dump(is_callable($z)); $a=call_user_func(['a', 'b']); var_dump(is_callable($a)); $b=call_user_func_array(['a', 'b'],[]); var_dump(is_callable($b)); $c=call_user_func('a' .'::b'); var_dump(is_callable($c));