php如何连结数据库，怎么写代码

php mysql如何连结数据库,怎么写代码，坐等高手，搞了好久都不成功

http://www.cnblogs.com/JamyWong/archive/2009/06/03/1495499.html

PHP数据库连接代码

mysql_select("localhost","root","root");
mysql_selectdb("mydb");
mysql_query("SET NAME ''UTF-8");