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run code in 300+ PHP versions simultaneously
<?php function changeValue(&$arg) { $return = $arg; $arg += 1; return $return; } echo changeValue(3);
Output for 8.3.0 - 8.3.7
Fatal error: Uncaught Error: changeValue(): Argument #1 ($arg) could not be passed by reference in /in/lJZ4O:9 Stack trace: #0 {main} thrown in /in/lJZ4O on line 9
Process exited with code 255.
Output for 8.1.23 - 8.1.28, 8.2.10 - 8.2.18
Fatal error: Uncaught Error: changeValue(): Argument #1 ($arg) cannot be passed by reference in /in/lJZ4O:9 Stack trace: #0 {main} thrown in /in/lJZ4O on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 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 - 5.4.31
Fatal error: Only variables can be passed by reference in /in/lJZ4O on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/lJZ4O on line 9

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