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

Following up jeremyharris' suggestion, this is how I needed to change it to make it work:

function array_filter_recursive($array) {
   foreach ($array as $key => &$value) {
      if (empty($value)) {
         unset($array[$key]);
      }
      else {
         if (is_array($value)) {
            $value = array_filter_recursive($value);
            if (empty($value)) {
               unset($array[$key]);
            }
         }
      }
   }

   return $array;
}