Compares two arrays and shows exact difference between them. The ultimate function

ArrayDiffAssoc.php

<?php

    /**
     * Compares two arrays and shows exact difference between them.
     *
     * !!! IMPORTANT !!
     * Order of two supplied arrays matters!
     *
     * @fix xZero707 <[email protected]>: Pay attention to types as well
     *
     * [NOTE BY danbrown AT php DOT net: The array_diff_assoc_recursive function is a
     * combination of efforts from previous notes deleted.
     * Contributors included (Michael Johnson), (jochem AT iamjochem DAWT com),
     * (sc1n AT yahoo DOT com), and (anders DOT carlsson AT mds DOT mdh DOT se).]
     *
     * @param array $array1
     * @param array $array2
     * @return array|int
     */
    function array_diff_assoc_recursive(array $array1, array $array2)
    {
        foreach ($array1 as $key => $value) {
            if (is_array($value)) {
                if (!array_key_exists($key, $array2)) {
                    $difference[$key] = $value;
                } elseif (!is_array($array2[$key])) {
                    $difference[$key] = $value;
                } else {
                    $new_diff = $this->array_diff_assoc_recursive($value, $array2[$key]);
                    if ($new_diff != FALSE) {
                        $difference[$key] = $new_diff;
                    }
                }
            } elseif (!array_key_exists($key, $array2) || $array2[$key] != $value) {
                $difference[$key] = $value;
            }
        }
        return (!isset($difference) ? 0 : $difference);
    }