Php, ajax, mysql, latin1 encoding problems

Php, ajax, mysql, latin1 encoding problem mysql default latin1 encoding, read garbled characters when reading data using ajax, ajax on the server side. php involves the encoding. header (& #39; Content-type: & nbsp; text/xml; charset = utf-8 & #39;); encoding of php, ajax, mysql, latin1
Mysql uses latin1 encoding by default. garbled characters are read when ajax is used to read data. in ajax. php on the server, the encoding is involved in these two aspects:

A. header ('content-type: text/xml; charset = utf-8 ');
B. added mysql_query ("set names 'utf8'") during query '");

In addition, ajax. php is UTF-8 encoded.

Records can be queried, but the XML source code can be viewed as follows:
2?

I have tried many types of encoding conversion and all failed. please help me !!!!!

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Try to add UTF-8 encoding to xml
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Mysql default latin1 encoding to UTF-8
Use UTF-8 for client html
It is OK as long as it can be normally displayed on the client, regardless of the Xiami sample.
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Do not use LATIN1 for multi-byte characters. UTF8 or GBK is recommended
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It is best to unify the encoding format ~~
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Can I use iconv () for unified encoding;
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B. added mysql_query ("set names 'utf8'") during query '");

It should be mysql_query ("set names 'utf-8.

Ajax. php uses iconv () to output XML code.

$ Xml = "xml data to be output ";

Echo iconv ("latin1", "UTF-8", $ xml );