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<?php var_export(call_user_func_array("array_shift", array(array("Test #1")))); echo "\n"; $arg1 = array("Test #2"); var_export(call_user_func_array("array_shift", array($arg1))); echo "\n"; $args = array(array("Test #3")); var_export(call_user_func_array("array_shift", $args)); echo "\n";
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: array_shift(): Argument #1 ($array) must be passed by reference, value given in /in/qoPje on line 3 'Test #1' Warning: array_shift(): Argument #1 ($array) must be passed by reference, value given in /in/qoPje on line 7 'Test #2' Warning: array_shift(): Argument #1 ($array) must be passed by reference, value given in /in/qoPje on line 11 'Test #3'
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 3 'Test #1' Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 7 'Test #2' Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 11 'Test #3'
Output for 7.0.0 - 7.0.33
Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 3 NULL Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 7 NULL Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 11 NULL
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
'Test #1' Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 7 NULL Warning: Parameter 1 to array_shift() expected to be a reference, value given in /in/qoPje on line 11 NULL

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