3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A implements JsonSerializable { public function jsonSerialize() { $this->className = __CLASS__; return $this; } } $a = new A(); $a->foo = 'bar'; $a->quuz = 'quuz'; var_dump(json_encode($a));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(43) "{"foo":"bar","quuz":"quuz","className":"A"}"
Output for 5.3.0 - 5.3.29
Fatal error: Interface 'JsonSerializable' not found in /in/B4G8u on line 4
Process exited with code 255.
Output for 5.0.5 - 5.2.17
Fatal error: Interface 'JsonSerializable' not found in /in/B4G8u on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'JsonSerializable' not found in /in/B4G8u 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/B4G8u 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/B4G8u on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/B4G8u on line 3
Process exited with code 255.