一个功能还算完整的数据库操作类

/*   
*   Author  墨龙   
*   Time    2010年12月2日 15:50:35    
*/    
    

$db = new mysql($db_host,$db_user,$db_password,$db_table,$db_conn,$pre,$coding);    

    

class mysql{    

        

    private    $db_host;    


    private    $db_user;    


    private    $db_password;    


    private    $db_table;    


    private    $db_conn;           //数据库连接标识;    


    private    $result;         //执行query命令的结果资源标识    


    private    $sql;      //sql执行语句    


    private    $pre;      //数据库表前缀      


    private    $coding;  //数据库编码，GBK,UTF8,gb2312    

        
        

    function __construct($db_host,$db_user,$db_password,$db_table,$db_conn,$pre,$coding){    

            

        $this->db_host     = $db_host;    


        $this->db_user     = $db_user;    


        $this->db_password = $db_password;    


        $this->db_table    = $db_table;    


        $this->db_conn     = $db_conn;    


        $this->pre         = $pre;    


        $this->coding      = $coding;    


        $this->connect();    

        
    }    
        

    function connect(){    

            

        $this->db_conn = @mysql_connect($this->db_host,$this->db_user,$this->db_password) or die($this->show_error("数据库链接错误,请检查数据库链接配置！"));    


        if(!mysql_select_db($this->db_table,$this->db_conn)){    

                

            echo "没有找到数据表：".$this->db_table;    

        }    

        mysql_select_db($this->db_t
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