iconv解决utf-8和gb2312编码互相转换问题

用PHP的iconv函数，解决utf-8和gb2312编码互相转换问题

$content="PHP中文";

//gb2312转utf-8
$content = iconv("gb2312","utf-8//IGNORE",$content);

//utf-8转gb2312
$content = iconv("utf-8","gb2312//IGNORE",$content);

注意要加【//IGNORE】，否则转换不成功。