3v4l.org

run code in 300+ PHP versions simultaneously
<?php $instance = new class('foo') { public function __construct($i) { var_dump($i); } }; var_dump($instance); var_dump(serialize($instance)); var_dump(unserialize(serialize($instance)));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(3) "foo" object(class@anonymous)#1 (0) { } Fatal error: Uncaught Exception: Serialization of 'class@anonymous' is not allowed in /in/tIEp7:8 Stack trace: #0 /in/tIEp7(8): serialize(Object(class@anonymous)) #1 {main} thrown in /in/tIEp7 on line 8
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/tIEp7 on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CLASS in /in/tIEp7 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_CLASS, expecting T_STRING or T_VARIABLE or '$' in /in/tIEp7 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CLASS, expecting T_STRING or T_VARIABLE or '$' in /in/tIEp7 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `'$'' in /in/tIEp7 on line 2
Process exited with code 255.

preferences:
301.78 ms | 401 KiB | 447 Q