Online PHP editor | output for HlOoA

<?php class Foo { function ServerFamiliesVersions($param1, $param2) { echo $param1; echo $param2; return '1!!'; } } $snac = json_decode('{"type":1,"subtype":24,"flag":0,"request_id":2155050054,"data":"\u0000\u0001\u0000\u0004\u0000\u0002\u0000\u0001\u0000\u0003\u0000\u0001\u0000\u0004\u0000\u0001\u0000\b\u0000\u0001\u0000\t\u0000\u0001\u0000\u000b\u0000\u0001\u0000\u0013\u0000\u0006\u0000\u0015\u0000\u0002\u0000\"\u0000\u0001\u0000%\u0000\u0001","callback":"ServerFamiliesVersions"}', true); echo gettype($snac) . "\n"; echo gettype($snac['callback']) . "\n"; print_r($snac); $foo = new Foo(); echo $foo->{$snac['callback']}($snac['data'], $snac['flag']);