class?MysqlConn
{
public?$dbtype;
public?$host;
public?$dbname;
public?$user;
????public?$pwd;
function?__construct($dbtype,$dbname,$host,$user,$pwd)
{
$this->dbtype=$dbtype;
$this->host=$host;
$this->dbname=$dbname;
$this->user=$user;
$this->pwd=$pwd;
if($this->dbtype=="mysql"?||?$this->dbtype=="mssql")
{
???? ????$dsn="$this->dbtype:host=$this->host;dbname=$this->dbname";
????}
else
{
????$dsn="$this->dbtype:dbname=$this->dbname";
????}
try?
{
$conn?=?new?PDO($dsn,?$this->user,?$this->pwd);? //初始化一個PDO對象，就是創建了數據庫連接對象$pdo
$conn->query("set?names?utf8");
return?$conn;
????}?
catch(PDOException?$e)
{
???? ????die("Error!:?"?.?$e->getMessage()?.?"<br/>");
????}????
}?
}
$conn=new?MysqlConn("mysql","dzxx_db","localhost","admin","123");//數據庫連接類實例化,執行連接操作，返回連接標識
3 回答
錯過了年華
TA貢獻56條經驗 獲得超22個贊
class?ConnDB{
var?$dbtype;
var?$host;
????var?$user;
????var?$pwd;
????var?$dbname;
????
//構造方法
????function?ConnDB($dbtype,$host,$user,$pwd,$dbname){
$this->dbtype=$dbtype;
????????? $this->host=$host;
$this->user=$user;
$this->pwd=$pwd;
$this->dbname=$dbname;
}
????//實現數據庫的連接并返回連接對象
????function?GetConnId(){
?????
???? if($this->dbtype=="mysql"?||?$this->dbtype=="mssql"){
???? $dsn="$this->dbtype:host=$this->host;dbname=$this->dbname";
}else{
$dsn="$this->dbtype:dbname=$this->dbname";
}????
try?{
???? $conn?=?new?PDO($dsn,?$this->user,?$this->pwd);? //初始化一個PDO對象，就是創建了數據庫連接對象$pdo
$conn->query("set?names?utf8");
???? return?$conn;
}?catch?(PDOException?$e)?{
???? die?("Error!:?"?.?$e->getMessage()?.?"<br/>");
}
?????
????}
}上面這個是原本的類，可沒見需要像你那樣寫啊
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