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run code in 300+ PHP versions simultaneously
<?php $x = new __PHP_Incomplete_Class(); var_dump(is_object($x)); class Foo extends __PHP_Incomplete_Class { } $y = new Foo(); var_dump(is_object($y)); class Bar extends stdClass { } $z = new Bar(); var_dump(is_object($z)); var_dump($x instanceof stdClass); var_dump($y instanceof stdClass); var_dump($z instanceof stdClass);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Class Foo cannot extend final class __PHP_Incomplete_Class in /in/bvYi0 on line 6
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Class Foo may not inherit from final class (__PHP_Incomplete_Class) in /in/bvYi0 on line 6
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
bool(true) bool(true) bool(true) bool(false) bool(false) bool(true)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
bool(false) bool(true) bool(true) bool(false) bool(false) bool(true)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/bvYi0 on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/bvYi0 on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/bvYi0 on line 14
Process exited with code 255.

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