PHP Deep Extend Array

Question

How can I do a deep extension of a multi dimensional associative array (for use with decoded JSON objects). I need the php equivalent of jQuery\'s $.extend(true, array1, arr

Answer 1

You should use: https://github.com/appcia/webwork/blob/master/lib/Appcia/Webwork/Storage/Config.php#L64

/**
 * Merge two arrays recursive
 *
 * Overwrite values with associative keys
 * Append values with integer keys
 *
 * @param array $arr1 First array
 * @param array $arr2 Second array
 *
 * @return array
 */
public static function merge(array $arr1, array $arr2)
{
    if (empty($arr1)) {
        return $arr2;
    } else if (empty($arr2)) {
        return $arr1;
    }

    foreach ($arr2 as $key => $value) {
        if (is_int($key)) {
            $arr1[] = $value;
        } elseif (is_array($arr2[$key])) {
            if (!isset($arr1[$key])) {
                $arr1[$key] = array();
            }

            if (is_int($key)) {
                $arr1[] = static::merge($arr1[$key], $value);
            } else {
                $arr1[$key] = static::merge($arr1[$key], $value);
            }
        } else {
            $arr1[$key] = $value;
        }
    }

    return $arr1;
}