php封裝的連接Mysql類及用法分析

本文實例講述了php封裝的連接Mysql類及用法。分享給大家供大家參考，具體如下：

class mysql{
private $db_name;
private $db_host;
private $db_user;
private $db_pwd;
private $conn;
private $querysql;
private $result;
private $resultarray=array();
private $row;
//創建構造函數 數據庫名 主機名 用戶名 密碼
function __counstruct($dbname,$dbhost,$dbuser,$dbpwd){
$this->db_name=$dbname;
$this->db_host=$dbhost;
$this->db_pwd=$dbpwd;
$this->db_user=$dbuser;
$this->dbconnect();
$this->selectdb();
}
//連接數據庫
private function db_connect(){
$this->conn=mysql_connect($this->db_host,$this->db_user,$this->db_pwd) or die("Could not Connect MySql Server");
}
private function selectdb(){
mysql_select_db($this->db_name) or die("unable to select dbname")
}
private function query(){
return $this->result=mysql_query($this->querysql);
}
private function get_result($sql){
$this->querysql=$sql;
$this->query();
if($this->get_num()>0){
//mysql_fetch_assoc()和 mysql_fetch_array(,MYSQL_ASSOC)從結果集中取得一行作為關聯數組 沒有則返回false
while($this->rows=mysql_fetch_array($this->result)){
//賦值 數組賦值 resultarray[]= 將影響的行數賦值給數組
$this->resultarray[]=$this->rows
}
return $this->resultarray;
}
}
//$result返回值為 bool類型 false為沒有數據
private function get_num(){
return $this->num=mysql_num_rows($this->result);
}
}
$m=new mysql("testuser","localhost","root","root");
$arreresult=$m->get_result("select * from userinfo");

希望本文所述對大家php程序設計有所幫助。