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<?php function takeMyReferencePlease(& $myReference) { var_dump($myReference); } $a = 'foo'; takeMyReferencePlease($a); takeMyReferencePlease($b = 'bar');
Output for 8.3.0 - 8.3.6
string(3) "foo" Fatal error: Uncaught Error: takeMyReferencePlease(): Argument #1 ($myReference) could not be passed by reference in /in/ii2iK:10 Stack trace: #0 {main} thrown in /in/ii2iK on line 10
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
string(3) "foo" Fatal error: Uncaught Error: takeMyReferencePlease(): Argument #1 ($myReference) cannot be passed by reference in /in/ii2iK:10 Stack trace: #0 {main} thrown in /in/ii2iK on line 10
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
string(3) "foo" Notice: Only variables should be passed by reference in /in/ii2iK on line 10 string(3) "bar"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.1, 7.3.32 - 7.3.33
string(3) "foo" string(3) "bar"
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
string(3) "foo" Strict Standards: Only variables should be passed by reference in /in/ii2iK on line 10 string(3) "bar"

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