3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class D { } class E extends D { public $D; } class F extends D { public $D; public $E; } class A implements Serializable { public function serialize () { $serialized = array(); foreach($this as $prop => $val) { $serialized[$prop] = $val; } return serialize($serialized); //return serialize(get_object_vars($this)); } function unserialize($serialized) { foreach(unserialize($serialized) as $prop => $val) { $this->$prop = $val; } return true; } } class B extends A { public $A; } class C extends A { public $A; public $B; } $oC = new C(); $oC->A = new A(); $oC->B = new B(); $oC->B->A = $oC->A; $oF = new F(); $oF->D = new D(); $oF->E = new E(); $oF->E->D = $oF->D; $ser = serialize($oC); echo $ser, "\n"; $ser = serialize($oF); echo $ser, "\n";
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
C:1:"C":71:{a:2:{s:1:"A";C:1:"A":6:{a:0:{}}s:1:"B";C:1:"B":18:{a:1:{s:1:"A";r:3;}}}} O:1:"F":2:{s:1:"D";O:1:"D":0:{}s:1:"E";O:1:"E":1:{s:1:"D";r:2;}}
Output for 5.1.0 - 5.3.29, hhvm-3.12.0
C:1:"C":85:{a:2:{s:1:"A";C:1:"A":6:{a:0:{}}s:1:"B";C:1:"B":32:{a:1:{s:1:"A";C:1:"A":6:{a:0:{}}}}}} O:1:"F":2:{s:1:"D";O:1:"D":0:{}s:1:"E";O:1:"E":1:{s:1:"D";r:2;}}
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.5
Fatal error: Interface 'Serializable' not found in /in/Xa3vX on line 19
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Serializable' not found in /in/Xa3vX on line 19
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Xa3vX on line 10
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Xa3vX on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/Xa3vX on line 10
Process exited with code 255.