3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = new __PHP_Incomplete_Class; //var_dump($a); var_dump(serialize($a));
Output for 5.2.7 - 5.6.28, 7.0.0 - 7.1.0
string(34) "O:22:"__PHP_Incomplete_Class":0:{}"
Output for hhvm-3.10.0 - 3.12.0
string(71) "O:22:"__PHP_Incomplete_Class":1:{s:27:"__PHP_Incomplete_Class_Name";N;}"
Output for 5.2.1 - 5.2.6
string(11) "O:0:"":0:{}"
Output for 5.0.0 - 5.2.0

Process exited with code 139.
Output for 4.3.11 - 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/CgCeA on line 2
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/CgCeA on line 2
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/CgCeA on line 2