Recursively remove empty elements and subarrays from a multi-dimensional array

Question

I can\'t seem to find a simple, straight-forward solution to the age-old problem of removing empty elements from arrays in PHP.

My input array may look like this: <

Answer 1

Try using array_map() to apply the filter to every array in $array:

$array = array_map('array_filter', $array);
$array = array_filter($array);

Demo: http://codepad.org/xfXEeApj