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run code in 300+ PHP versions simultaneously
<?php $x = serialize(new __PHP_Incomplete_Class('foo')); var_dump(unserialize($x)); // Did I succeed?
Output for 5.2.7 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
object(__PHP_Incomplete_Class)#1 (0) { }
Output for 5.2.2 - 5.2.6
Notice: unserialize(): Error at offset 2 of 11 bytes in /in/RZBRR on line 4 bool(false)
Output for 5.2.1
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 1667590897 bytes) in /in/RZBRR on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0

Process exited with code 139.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/RZBRR on line 4
Process exited with code 255.
Output for 4.3.11, 4.4.0 - 4.4.9
Fatal error: Unknown(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition unknown of the object you are trying to operate on was loaded _before_ the session was started in /in/RZBRR on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.10
Fatal error: Unknown(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition <b>unknown</b> of the object you are trying to operate on was loaded _before_ the session was started in /in/RZBRR on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Unknown(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition <b>unknown</b> of the object you are trying to operate on was loaded _before_ the session was started in /in/RZBRR on line 3

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