3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A extends __PHP_Incomplete_ClassClass { } $a = new A(); var_dump(is_object($a));
based on UDCY1
Output for 5.0.0 - 5.6.28, 7.0.0 - 7.1.0
Fatal error: Class '__PHP_Incomplete_ClassClass' not found in /in/lp4vQ on line 3
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: unknown class __PHP_Incomplete_ClassClass in /in/lp4vQ on line 3
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.2 - 4.4.9
Fatal error: Class a: Cannot inherit from undefined class __php_incomplete_classclass in /in/lp4vQ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Class a: Cannot inherit from undefined class __php_incomplete_classclass in /in/lp4vQ on line 3