php-php Unable to query Chinese data in MySQL

PHP Database

Kneel and beg the great God to answer!
My PHP script has implemented a link to the MySQL database. But found in the HTML page input Chinese query, showing that the database does not have this information. But in fact, my MySQL has this Chinese data. I've tried the setup utf8,gbk,gb2312 on the Internet and it's useless. I do not mean that the page display is garbled in Chinese, but the database can not execute the query Chinese this operation.
I hope the great God can do a favor!

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