php-数据库连接类

 <?php
 class DB{
     var $host;
     var $user;
     var $pwd;
     var $dbname;
     var $conn;

     function DB($host,$user,$pwd,$dbname){
         $this->host = $host;
         $this->user = $user;
         $this->pwd = $pwd;
         $this->dbname = $dbname;
     }

     function GetConn(){
         $this->conn = mysql_connect($this->host,$this->user,$this->pwd,$this->dbname) or die("数据库服务器连接失败".mysql_errno());
         mysql_select_db($this->dbname,$this->conn) or die("数据库选择失败".mysql_errno());
         mysql_query("SET NAMES 'UTF8'");
         mysql_query("SET CHARACTER SET UTF8");
         mysql_query("SET CHARACTER_SET_RESULTS=UTF8'");
         return $this->conn;
     }

     function CloseConnld(){
         mysql_close($this->conn);
     }
 }
 ?>

<?php
class AdminDB{
    function ExecSQL($sql,$conn){
        $sqltype = strtolower(substr(trim($sql), 0, 6));
        $rs = mysql_query($sql);
        if($sqltype == "select"){
            $array = array();
            while($row = mysql_fetch_array($rs)){
                array_push($array,$row);
            }
            if($rs == false)
                return false;
            else
                return $array;
        }else if($sqltype == "update" || $sqltype == "delete" || $sqltype == "insert"){
            if($rs)
                return true;
            else
                return false;
        }
    }
}
?>