3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { static function b() { return 'soy b static'; } function a() { return 'soy a'; } } $z=new a; var_dump(is_callable($z::b())); die; $b=['a', 'b']; var_dump(is_callable($b)); $c='a' .'::b'; var_dump(is_callable($c));

preferences:
54.94 ms | 402 KiB | 5 Q