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

preferences:
35.6 ms | 402 KiB | 5 Q