php 字符安全转码为UTF-8 的函数,转换前做判断

不废话，直接上代码：

function safeEncoding($string,$outEncoding = 'UTF-8'){$encoding = "UTF-8";$encoding = mb_detect_encoding($string, array("UTF-8", "GB2312", "GBK", "EUC-JP", "HZ"));if(strtoupper($encoding) == strtoupper($outEncoding))return $string;elsereturn iconv($encoding,$outEncoding,$string);}