This implementation is wrong according to the PHP documentation http://php.net/manual/en/function.array-column.php.
If the second parameter is NULL, it should return the complete array.
Maybe you could look at ramsey's implementation in https://github.com/ramsey/array_column
This implementation is wrong according to the PHP documentation http://php.net/manual/en/function.array-column.php.
If the second parameter is NULL, it should return the complete array.
Maybe you could look at ramsey's implementation in https://github.com/ramsey/array_column