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<?php $t = 5; mul(($c = $t)); function mul(&$t) { $t *= 5; } var_dump($t);
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught Error: mul(): Argument #1 ($t) could not be passed by reference in /in/v8sFd:5 Stack trace: #0 {main} thrown in /in/v8sFd on line 5
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught Error: mul(): Argument #1 ($t) cannot be passed by reference in /in/v8sFd:5 Stack trace: #0 {main} thrown in /in/v8sFd on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Only variables should be passed by reference in /in/v8sFd on line 5 int(5)
Output for 7.3.32 - 7.3.33
int(5)
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/v8sFd on line 5 int(5)
Output for 4.3.2 - 4.3.11, 4.4.0, 5.0.0 - 5.0.5
Fatal error: Only variables can be passed by reference in /in/v8sFd on line 5
Process exited with code 255.
Output for 4.4.1 - 4.4.9
Notice: Only variables can be passed by reference in /in/v8sFd on line 5 int(5)
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/v8sFd on line 5

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