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         $username = "root";
         $password = "123";
         // ½¨Á¢Á¬½Ó
         mysql_connect('localhost', $username, $password);
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         mysql_select_db("test");
        // ²åÈëÊý¾Ý
        mysql_query("insert into tb values (12)"); // ²åÈëÊý¾Ý


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