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<?php Interface MyCountableInterface { public function count($mode); } class MyCountable implements MyCountableInterface { public function count($myFilterArgument = null) { } } $myCountable = new MyCountable; $myCountable->count(1); count($myCountable); count($myCountable, COUNT_NORMAL); count($myCountable, COUNT_RECURSIVE);
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, MyCountable given in /in/pnIBB:17 Stack trace: #0 {main} thrown in /in/pnIBB on line 17
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, MyCountable given in /in/pnIBB:17 Stack trace: #0 {main} thrown in /in/pnIBB on line 17
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: count(): Parameter must be an array or an object that implements Countable in /in/pnIBB on line 17 Warning: count(): Parameter must be an array or an object that implements Countable in /in/pnIBB on line 18 Warning: count(): Parameter must be an array or an object that implements Countable in /in/pnIBB on line 19
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Declaration of MyCountable::count() must be compatible with that of MyCountableInterface::count() in /in/pnIBB on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/pnIBB 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 T_STRING in /in/pnIBB on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/pnIBB on line 3
Process exited with code 255.

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