mysql_connect("localhost", "root","1981427") //连接位于localhost的服务器，用户名为root
?>
@mysql_connect("localhost", "root","1981427")
or die("数据库服务器连接失败");
?>
@mysql_connect("localhost", "root","1981427") //选择数据库之前需要先连接数据库服务器
or die("数据库服务器连接失败");
@mysql_select_db("test") //选择数据库mydb
or die("数据库不存在或不可用");
?>
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