如何在PHP和MySQL中连接数据库?

问题描述:

这是我的代码.它无法连接到数据库.

Here is my code. It cannot connect to database.

class connect{
        // Check MySQL
        function chkmys(){
            if (mysql_errno()>0) die("MySQL error ".mysql_errno()." : ".mysql_error());
        }
        // Open a connection
        function open(){
            $hst = "127.0.0.1";
            $usr = "root";
            $pwd = ""; //KsfHMyDb#
            $dbs = "mine_db";
            $vsr = "D:\wamp\bin\mysql\mysql5.0.51b\data";
            if(file_exists($vsr)) {
                $cnx = mysql_connect($hst,$usr,$pwd);
                /* if (!$cnx) die('Failed to open connection to MySQL server');*/
                mysql_select_db($dbs,$cnx);
                connect::chkmys();
                return $cnx;
            }
        }
        // Close a connection
        function close($cnx){
            mysql_close($cnx);
            }
        }

hst = " ;
hst = "127.0.0.1";


usr = " ;
usr = "root";


pwd = " ; // KsfHMyDb#
pwd = ""; //KsfHMyDb#