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run code in 300+ PHP versions simultaneously
<?php $foo = (bool) array_shift(null); var_dump($foo); $bar = (array) null; var_dump((bool) $bar[0]->something);
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught Error: array_shift(): Argument #1 ($array) could not be passed by reference in /in/a5P6V:3 Stack trace: #0 {main} thrown in /in/a5P6V on line 3
Process exited with code 255.
Output for 8.1.23 - 8.1.28, 8.2.10 - 8.2.18
Fatal error: Uncaught Error: array_shift(): Argument #1 ($array) cannot be passed by reference in /in/a5P6V:3 Stack trace: #0 {main} thrown in /in/a5P6V on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.21
Fatal error: Only variables can be passed by reference in /in/a5P6V on line 3
Process exited with code 255.
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