PHP輸出數組

function print_array($array)
{
    $str = '';
    foreach ($array as $key => $value) {
        if (is_string($value))
            $value = sprintf("'%s'", $value);
        elseif (is_array($value))
            $value = print_array($value);
        else
            $value = strval($value);
        $item_str = sprintf("'%s' => %s,\n", $key, $value);
        $str .= $item_str;
    }
    return sprintf("[\n%s\n]", $str);
}