PHP连接mysql的问题新手！！！

本帖最后由 zuoan2008 于 2013-06-25 16:38:28 编辑

我的login_action.php

 ";    echo "db_host:".$db_host."--"."db_name:".$db_name."--"."db_pass:".$db_pass."--"."db_dabase:".$db_dabase;	$mysqldb==new MySQLDB($db_host,$db_name,$db_pass,$db_dabase);    	     	$sql = "select * from loginuser where username='".$username."'";    $result = $mysqldb->Query($sql);//查询    $rs = $mysqldb->getRows($result);//获得记录集    $num = $mysqldb->getRowsNum($result);//获得记录数	if($num>0){		//如果是 登陆		session_start();		$_SESSION['username']=$username;        $_SESSION['password']=$password;		echo "";	}else{		echo "登录错误";	}?>

config_db.php

class_db.php

 host = $host;			$this->user = $user;			$this->passwd = $password;			$this->database = $database;			$this->conn=mysql_connect($this->host, $this->user,$this->passwd) or die("Could not connect to $this->host");			mysql_select_db($this->database,$this->conn) or die("Could not switch to database $this->database");			mysql_query("set names 'gbk'");		}		//该函数用来关闭数据库连接		function Close()		{		    MySQL_close($this->conn);		}		//该函数实现数据库查询操作		function Query($queryStr)		{		   $res =Mysql_query($queryStr, $this->conn) or die("Could not query database");		   return $res;		}} 

错误提示：Fatal error: Call to a member function Query() on a non-object in D:\AppServ\www\jxc\include\action\login_action.php on line 17

也就是login_action.php里面的 $result = $mysqldb->Query($sql);//查询
这一行

请问大侠们怎么解决？ 谢谢！

回复讨论(解决方案)

$mysqldb =new MySQLDB($db_host,$db_name,$db_pass,$db_dabase);