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

preferences:
35.61 ms | 402 KiB | 5 Q