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<?php class Test { private static function method() { echo "OK"; } public static function run() { call_user_func(array('self', 'method')); call_user_func(array('self::method')); } } Test::run();
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Deprecated: Use of "self" in callables is deprecated in /in/ADNST on line 8 OK Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, array callback must have exactly two members in /in/ADNST:9 Stack trace: #0 /in/ADNST(13): Test::run() #1 {main} thrown in /in/ADNST on line 9
Process exited with code 255.
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28
OK Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, array must have exactly two members in /in/ADNST:9 Stack trace: #0 /in/ADNST(13): Test::run() #1 {main} thrown in /in/ADNST on line 9
Process exited with code 255.
Output for 8.0.0 - 8.0.9
OK Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, array must have exactly two members in /in/ADNST:9 Stack trace: #0 /in/ADNST(13): Test::run() #1 {main} thrown in /in/ADNST on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
OK Warning: call_user_func() expects parameter 1 to be a valid callback, array must have exactly two members in /in/ADNST on line 9
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
OK Warning: call_user_func(Array): First argument is expected to be a valid callback in /in/ADNST on line 9
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/ADNST on line 4
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 T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/ADNST on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/ADNST on line 4
Process exited with code 255.

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