3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A implements JsonSerializable { public function jsonSerialize() { return []; } } new A(); new B(); class B implements JsonSerializable { public function jsonSerialize() { return []; } }
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Class 'B' not found in /in/mgYXr:8 Stack trace: #0 {main} thrown in /in/mgYXr on line 8
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: Class undefined: B in /in/mgYXr:8 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: Class undefined: B in /in/mgYXr on line 8
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Class 'B' not found in /in/mgYXr on line 8
Process exited with code 255.
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/mgYXr on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/mgYXr on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/mgYXr 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/mgYXr on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/mgYXr on line 3
Process exited with code 255.