3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $b = 'foo'; } class B extends A { public function __sleep() { return array('b'); } } class C extends A implements Serializable { public function unserialize($serialized) { /*... */ } public function serialize() { $b = new ReflectionProperty($this, 'b'); $b->setAccessible(true); return serialize(array('b' => $b->getValue($this))); } } var_dump(serialize(new A())); var_dump(serialize(new B())); var_dump(serialize(new C()));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: C implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/kYjnV on line 16 string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Warning: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(12) "O:1:"B":0:{}" Fatal error: Uncaught ReflectionException: Property C::$b does not exist in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 8.0.0 - 8.0.30
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Warning: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(12) "O:1:"B":0:{}" Fatal error: Uncaught ReflectionException: Property C::$b does not exist in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Notice: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught ReflectionException: Property C::$b does not exist in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 7.3.32 - 7.3.33
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught ReflectionException: Property C::$b does not exist in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.4.14 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Notice: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught exception 'ReflectionException' with message 'Property C::$b does not exist' in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 5.3.3 - 5.3.29, 5.4.0 - 5.4.13
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Notice: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught exception 'ReflectionException' with message 'Property C::$b does not exist' in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} Next exception 'Exception' with message 'C::serialize() must return a string or NULL' in /in/kYjnV:29 Stack trace: #0 /in/kYjnV(0): serialize() #1 {main} thrown in /in/kYjnV on line 29
Process exited with code 255.
Output for 5.3.0 - 5.3.2
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Notice: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught exception 'ReflectionException' with message 'Property C::$b does not exist' in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C->serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} Next exception 'Exception' with message 'C::serialize() must return a string or NULL' in /in/kYjnV:0 Stack trace: #0 /in/kYjnV(0): serialize() #1 {main} thrown in /in/kYjnV on line 0
Process exited with code 255.
Output for 5.1.0 - 5.1.2
string(33) "O:1:"A":1:{s:4:"Ab";s:3:"foo";}" Notice: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/kYjnV on line 28 string(22) "O:1:"B":1:{s:1:"b";N;}" Fatal error: Uncaught exception 'ReflectionException' with message 'Property C::$b does not exist' in /in/kYjnV:21 Stack trace: #0 /in/kYjnV(21): ReflectionProperty->__construct(Object(C), 'b') #1 [internal function]: C::serialize() #2 /in/kYjnV(29): serialize(Object(C)) #3 {main} thrown in /in/kYjnV on line 21
Process exited with code 255.
Output for 5.0.5
Fatal error: Interface 'Serializable' not found in /in/kYjnV on line 16
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Serializable' not found in /in/kYjnV on line 16
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/kYjnV on line 5
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/kYjnV on line 5
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/kYjnV on line 5
Process exited with code 255.
preferences:
303.17 ms | 401 KiB | 460 Q