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<?php class Counter implements Countable { public function count() { var_dump(func_get_arg(0)); return count($this->data); } } $counter = new Counter; $counter->count(COUNT_RECURSIVE);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of Counter::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/Pg3G7 on line 4 int(1) Warning: Undefined property: Counter::$data in /in/Pg3G7 on line 7 Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/Pg3G7:7 Stack trace: #0 /in/Pg3G7(12): Counter->count(1) #1 {main} thrown in /in/Pg3G7 on line 7
Process exited with code 255.
Output for 8.0.10 - 8.0.30
int(1) Warning: Undefined property: Counter::$data in /in/Pg3G7 on line 7 Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/Pg3G7:7 Stack trace: #0 /in/Pg3G7(12): Counter->count(1) #1 {main} thrown in /in/Pg3G7 on line 7
Process exited with code 255.
Output for 8.0.0 - 8.0.9
int(1) Warning: Undefined property: Counter::$data in /in/Pg3G7 on line 7 Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/Pg3G7:7 Stack trace: #0 /in/Pg3G7(12): Counter->count(1) #1 {main} thrown in /in/Pg3G7 on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
int(1) Notice: Undefined property: Counter::$data in /in/Pg3G7 on line 7 Warning: count(): Parameter must be an array or an object that implements Countable in /in/Pg3G7 on line 7
Output for 7.3.32 - 7.3.33
int(1) Warning: count(): Parameter must be an array or an object that implements Countable in /in/Pg3G7 on line 7
Output for 5.2.6 - 5.2.17, 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 - 7.1.33
int(1) Notice: Undefined property: Counter::$data in /in/Pg3G7 on line 7
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.5
int(1) Notice: Undefined property: Counter::$data in /in/Pg3G7 on line 7
Output for 5.0.5
Fatal error: Interface 'Countable' not found in /in/Pg3G7 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Countable' not found in /in/Pg3G7 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/Pg3G7 on line 2
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 '{' in /in/Pg3G7 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/Pg3G7 on line 2
Process exited with code 255.

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