3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class obj implements Serializable { private $data; protected $extradata; public function __construct() { $this->data = "My private data"; } public function getData() { return $this->data; } public function getExtraData(){ $this->extradata = array( 'data1','data2' ); } public function serialize() { return serialize(array( $this->data, $this->extradata, )); } public function unserialize($data) { $orgdata = unserialize($data); $this->data = $orgdata[0]; $this->extradata = $orgdata[1]; } } $obj = new obj(); $s = serialize($obj); echo 'first serialize: '; var_dump($s); $u = unserialize($s); echo 'first unserialize: '; var_dump($u); $u->getExtraData(); echo 'with extradata: '; var_dump($u); $s2 = serialize($u); echo 'second serialize: '; var_dump($s2); $u2 = unserialize($s2); echo 'second unserialize: '; var_dump($u2);
based on pgr2a
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
first serialize: string(54) "C:3:"obj":39:{a:2:{i:0;s:15:"My private data";i:1;N;}}" first unserialize: object(obj)#2 (2) { ["data":"obj":private]=> string(15) "My private data" ["extradata":protected]=> NULL } with extradata: object(obj)#2 (2) { ["data":"obj":private]=> string(15) "My private data" ["extradata":protected]=> array(2) { [0]=> string(5) "data1" [1]=> string(5) "data2" } } second serialize: string(90) "C:3:"obj":75:{a:2:{i:0;s:15:"My private data";i:1;a:2:{i:0;s:5:"data1";i:1;s:5:"data2";}}}" second unserialize: object(obj)#3 (2) { ["data":"obj":private]=> string(15) "My private data" ["extradata":protected]=> array(2) { [0]=> string(5) "data1" [1]=> string(5) "data2" } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0 - 5.2.17
first serialize: string(54) "C:3:"obj":39:{a:2:{i:0;s:15:"My private data";i:1;N;}}" first unserialize: object(obj)#2 (2) { ["data:private"]=> string(15) "My private data" ["extradata:protected"]=> NULL } with extradata: object(obj)#2 (2) { ["data:private"]=> string(15) "My private data" ["extradata:protected"]=> array(2) { [0]=> string(5) "data1" [1]=> string(5) "data2" } } second serialize: string(90) "C:3:"obj":75:{a:2:{i:0;s:15:"My private data";i:1;a:2:{i:0;s:5:"data1";i:1;s:5:"data2";}}}" second unserialize: object(obj)#3 (2) { ["data:private"]=> string(15) "My private data" ["extradata:protected"]=> array(2) { [0]=> string(5) "data1" [1]=> string(5) "data2" } }
Output for 5.0.5
Fatal error: Interface 'Serializable' not found in /in/TUKQ1 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Serializable' not found in /in/TUKQ1 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/TUKQ1 on line 2
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/TUKQ1 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/TUKQ1 on line 2
Process exited with code 255.