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run code in 300+ PHP versions simultaneously
<?php $foo = new \StdClass(); assert('!$foo instanceof NotExisting');
Output for 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, 7.3.32 - 7.3.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: assert(): Calling assert() with a string argument is deprecated in /in/GHjdX on line 5
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/GHjdX on line 3
Output for 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/GHjdX on line 3 Fatal error: Class 'NotExisting' not found in /in/GHjdX(5) : assert code on line 1
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/GHjdX on line 3 Parse error: syntax error, unexpected T_STRING in /in/GHjdX(5) : assert code on line 1 Fatal error: Failure evaluating code: !$foo instanceof NotExisting in /in/GHjdX on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/GHjdX on line 3 Parse error: parse error, unexpected T_STRING in /in/GHjdX(5) : assert code on line 1 Fatal error: Failure evaluating code: !$foo instanceof NotExisting in /in/GHjdX on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/GHjdX on line 3 Parse error: parse error in /in/GHjdX(5) : assert code on line 1 Fatal error: Failure evaluating code: !$foo instanceof NotExisting in /in/GHjdX on line 5
Process exited with code 255.

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