- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
- Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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: array_filter() expects parameter 2 to be a valid callback, no array or string given in /in/1pf5t on line 3 NULL
- Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
- Warning: array_filter(): The second argument, '', should be a valid callback in /in/1pf5t on line 3 NULL
- Output for 4.3.0 - 4.3.1
- Warning: array_filter() [http://www.php.net/function.array-filter]: The second argument, '', should be a valid callback in /in/1pf5t on line 3 NULL