How to remove empty values from multidimensional array in PHP?
filtering, isnullorempty, multidimensional-array, php, string
Solution
Bit late, but may help someone looking for same answer. I used this very simple approach to;
- remove all the keys from nested arrays that contain no value, then
- remove all the empty nested arrays.
$postArr = array_map('array_filter', $postArr);
$postArr = array_filter( $postArr );
Problem
I've been looking a lot of answers, but none of them are working for me. This is the data assigned to my `$quantities` array: ``` Array( [10] => Array([25.00] => 1) [9] => Array([30.00] => 3) [8] => Array([30.00] => 4) [12] => Array([35.00] => ) [1] => Array([30.00] => ) [2] => Array([30.00] => ) ) ``` I'm looking for a way to remove the subarrays with empty values like `[12]` `[1]` and `[2]` while keeping everything else. The desired result: ``` Array( [10] => Array([25.00] => 1) [9] => Array([30.00] => 3) [8] => Array([30.00] => 4) ) ``` I tried a lot of the functions on the official php docs and none of them worked. I've used this one: ``` function array_filter_recursive($array, $callback = null) { foreach ($array as $key => & $value) { if (is_array($value)) { $value = array_filter_recursive($value, $callback); } else { if ( ! is_null($callback)) { if ( ! $callback($value)) { unset($array[$key]); } } else { if ( ! (bool) $value) { unset($array[$key]); } } } } unset($value); return $array; } ``` But it only removes the element in the subarrays; I need the subarrays to be removed entirely. I don't want this: ``` Array( [10] => Array([25.00] => 1) [9] => Array([30.00] => 3) [8] => Array([30.00] => 4) [12] => Array() [1] => Array() [2] => Array() ) ```