/**
* 将所有编码转换成UTF-8
*
* @param string $str 字符串
* @return string 转好的字符串
*/
public function utfcode($str)
{
$curr_encoding = mb_detect_encoding($str);
if ($curr_encoding == "UTF-8" && mb_check_encoding($str, "UTF-8")) {
return $str;
}
return mb_encode($str);
}
/**
* 加密
*
* @param string $str 要加密的字符串
* @return string 加密好的字符串
*/
public static function woods_encode($str)
{
if (empty($str)) {
return '';
}
$str = strrev(base64_encode($str));
for ($i = 0; $i < strlen($str); ++$i) {
$str[$i] = chr(ord($str[$i]) + 1);
}
return mb_encode($str);
}