3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'a:2:{i:0;O:9:"exception":1:{s:17:"'."\0".'Exception'."\0".'string";i:1;}i:1;R:3;}'; $x = unserialize($x); var_dump($x);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot assign int to property Exception::$string of type string in /in/03oFa:4 Stack trace: #0 /in/03oFa(4): unserialize('a:2:{i:0;O:9:"e...') #1 {main} thrown in /in/03oFa on line 4
Process exited with code 255.
Output for 5.6.28, 7.0.20, 7.1.5 - 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
array(2) { [0]=> object(Exception)#1 (6) { ["message":protected]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/03oFa" ["line":protected]=> int(4) ["trace":"Exception":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/03oFa" ["line"]=> int(4) ["function"]=> string(11) "unserialize" ["args"]=> array(1) { [0]=> string(67) "a:2:{i:0;O:9:"exception":1:{s:17:"Exceptionstring";i:1;}i:1;R:3;}" } } } ["previous":"Exception":private]=> NULL } [1]=> int(1) }
Output for 7.1.0
array(1) { [0]=> object(Exception)#1 (6) { ["message":protected]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/03oFa" ["line":protected]=> int(4) ["trace":"Exception":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/03oFa" ["line"]=> int(4) ["function"]=> string(11) "unserialize" ["args"]=> array(1) { [0]=> string(67) "a:2:{i:0;O:9:"exception":1:{s:17:"Exceptionstring";i:1;}i:1;R:3;}" } } } ["previous":"Exception":private]=> NULL } }
Output for 7.0.0 - 7.0.6
array(1) { [0]=> object(Exception)#1 (5) { ["message":protected]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/03oFa" ["line":protected]=> int(4) ["trace":"Exception":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/03oFa" ["line"]=> int(4) ["function"]=> string(11) "unserialize" ["args"]=> array(1) { [0]=> string(67) "a:2:{i:0;O:9:"exception":1:{s:17:"Exceptionstring";i:1;}i:1;R:3;}" } } } } }
Output for 5.4.44 - 5.4.45, 5.5.28 - 5.5.35, 5.6.12 - 5.6.21
array(2) { [0]=> object(Exception)#1 (5) { ["message":protected]=> string(0) "" ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/03oFa" ["line":protected]=> int(4) ["trace":"Exception":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/03oFa" ["line"]=> int(4) ["function"]=> string(11) "unserialize" ["args"]=> array(1) { [0]=> string(67) "a:2:{i:0;O:9:"exception":1:{s:17:"Exceptionstring";i:1;}i:1;R:3;}" } } } } [1]=> int(1) }
Output for 5.4.1 - 5.4.43, 5.5.24 - 5.5.27, 5.6.8 - 5.6.11
array(2) { [0]=> object(Exception)#1 (7) { ["message":protected]=> string(0) "" ["string":"Exception":private]=> &int(1) ["code":protected]=> int(0) ["file":protected]=> string(9) "/in/03oFa" ["line":protected]=> int(4) ["trace":"Exception":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/03oFa" ["line"]=> int(4) ["function"]=> string(11) "unserialize" ["args"]=> array(1) { [0]=> string(67) "a:2:{i:0;O:9:"exception":1:{s:17:"Exceptionstring";i:1;}i:1;R:3;}" } } } ["previous":"Exception":private]=> NULL } [1]=> &int(1) }

preferences:
209.6 ms | 403 KiB | 272 Q