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<?php function foo(&$object = null) { echo("Yay\n"); } call_user_func_array(new stdClass(), array());
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given in /in/vIWPC:4 Stack trace: #0 {main} thrown in /in/vIWPC on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback, no array or string given in /in/vIWPC:4 Stack trace: #0 {main} thrown in /in/vIWPC on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /in/vIWPC on line 4
Output for 5.2.0 - 5.2.17
Catchable fatal error: Object of class stdClass could not be converted to string in /in/vIWPC on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Notice: Object of class stdClass to string conversion in /in/vIWPC on line 4 Warning: call_user_func_array(): First argument is expected to be a valid callback, 'Object' was given in /in/vIWPC on line 4
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '=', expecting ')' in /in/vIWPC on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '=', expecting ')' in /in/vIWPC on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/vIWPC on line 3
Process exited with code 255.

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