PHP解决字符乱码问题（多种编码转换）

mb_detect_encoding

检测要转换字符串的编码

iconv

字符串编码转化

用一个例子结合起来

$row['Description'] = iconv(mb_detect_encoding($row['Description'],  array('ASCII, UTF-8'), true), "UTF-8//IGNORE", $row['Description']);