3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A implements Serializable { public function serialize() { return 'foo'; } public function unserialize() { } } var_dump(serialize(new A()));
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Fatal error: Declaration of A::unserialize() must be compatible with Serializable::unserialize($serialized) in /in/06FlB on line 3
Process exited with code 255.
Output for 5.1.0 - 5.3.29, hhvm-3.10.0 - 3.12.0
Fatal error: Declaration of A::unserialize() must be compatible with that of Serializable::unserialize() in /in/06FlB on line 3
Process exited with code 255.
Output for 5.0.5
Fatal error: Interface 'Serializable' not found in /in/06FlB on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Serializable' not found in /in/06FlB on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/06FlB on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/06FlB on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/06FlB on line 3
Process exited with code 255.