function drupal_array_diff_assoc_recursive

Recursively computes the difference of arrays with additional index check.

This is a version of array_diff_assoc() that supports multidimensional arrays.

Parameters

array $array1: The array to compare from.

array $array2: The array to compare to.

Return value

array Returns an array containing all the values from array1 that are not present in array2.

File

includes/common.inc, line 6864

Code

function drupal_array_diff_assoc_recursive($array1, $array2) {
    $difference = array();
    foreach ($array1 as $key => $value) {
        if (is_array($value)) {
            if (!array_key_exists($key, $array2) || !is_array($array2[$key])) {
                $difference[$key] = $value;
            }
            else {
                $new_diff = drupal_array_diff_assoc_recursive($value, $array2[$key]);
                if (!empty($new_diff)) {
                    $difference[$key] = $new_diff;
                }
            }
        }
        elseif (!array_key_exists($key, $array2) || $array2[$key] !== $value) {
            $difference[$key] = $value;
        }
    }
    return $difference;
}