private function _list_row_implode($array)
{
if (!is_array($array)) {
return $array;
}
$string = array();
foreach ($array as $key => $val) {
if (is_array($val)) {
$val = implode(',', $val);
}
$string[] = "{$key}{$this->_list_row_glue}{$val}";
}
return implode($this->_list_row_delimiter, $string);
}