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<?php $a=new stdClass; serialize($a); unserialize($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: unserialize(): Argument #1 ($data) must be of type string, stdClass given in /in/Ds7db:6 Stack trace: #0 /in/Ds7db(6): unserialize(Object(stdClass)) #1 {main} thrown in /in/Ds7db on line 6
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: unserialize() expects parameter 1 to be string, object given in /in/Ds7db on line 6
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5, 5.1.0 - 5.1.6
Notice: unserialize(): Argument is not a string in /in/Ds7db on line 6
Output for 4.3.2 - 4.3.9, 5.0.0 - 5.0.2
Notice: unserialize(): Argument is not an string in /in/Ds7db on line 6
Output for 4.3.0 - 4.3.1
Notice: unserialize() [http://www.php.net/function.unserialize]: Argument is not an string in /in/Ds7db on line 6

preferences:
224.49 ms | 401 KiB | 329 Q