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run code in 300+ PHP versions simultaneously
<?php class Foo { function __invoke() { return 1; } } $foo = new Foo; echo call_user_func($foo);
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, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1
Output for 5.2.0 - 5.2.17
Catchable fatal error: Object of class Foo could not be converted to string in /in/vrPtg on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Notice: Object of class Foo to string conversion in /in/vrPtg on line 9 Warning: call_user_func(Object): First argument is expected to be a valid callback in /in/vrPtg on line 9
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Notice: Object to string conversion in /in/vrPtg on line 9 Warning: call_user_func(Object): First argument is expected to be a valid callback in /in/vrPtg on line 9
Output for 4.3.0 - 4.3.1
Notice: Object to string conversion in /in/vrPtg on line 9 Warning: call_user_func(Object) [http://www.php.net/function.call-user-func]: First argument is expected to be a valid callback in /in/vrPtg on line 9

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