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<?php class A { private $a; private $b; public function __construct($a) { $this->a = $a; $this->b = $a; } public function __sleep() { return array('a'); } public function __wakeUp() { //$this->__construct($this->a); } public function getA() { return $this->a; } public function getB() { return $this->b; } } $a = new A('a'); $serialized = serialize($a); $unserialized = unserialize($serialized); var_dump($serialized); var_dump($unserialized); var_dump($unserialized->getA()); var_dump($unserialized->getB());
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(31) "O:1:"A":1:{s:4:"Aa";s:1:"a";}" object(A)#2 (2) { ["a":"A":private]=> string(1) "a" ["b":"A":private]=> NULL } string(1) "a" NULL
Output for 5.0.2 - 5.0.4, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
string(31) "O:1:"A":1:{s:4:"Aa";s:1:"a";}" object(A)#2 (2) { ["a:private"]=> string(1) "a" ["b:private"]=> NULL } string(1) "a" NULL
Output for 5.0.5

Process exited with code 139.
Output for 5.0.0 - 5.0.1
string(22) "O:1:"A":1:{s:1:"a";N;}" object(A)#2 (3) { ["a:private"]=> NULL ["b:private"]=> NULL ["a"]=> NULL } NULL NULL
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/Nmqc2 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/Nmqc2 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/Nmqc2 on line 5
Process exited with code 255.
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