3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Foo { public function serialize() {} } var_dump(serialize(new Foo)); $c = new class() { public function serialize() {} }; var_dump(serialize($c));
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
string(14) "O:3:"Foo":0:{}" Fatal error: Uncaught Exception: Serialization of 'class@anonymous' is not allowed in /in/tvMGa:14 Stack trace: #0 /in/tvMGa(14): serialize(Object(class@anonymous)) #1 {main} thrown in /in/tvMGa on line 14
Process exited with code 255.
preferences:
120.52 ms | 1536 KiB | 4 Q