讲解php中 pdo占位符的使用方法

$dbms='mysql';//数据库类型 $host='localhost';//数据库主机名 $dbName='test';//使用的数据库 $user='root';//数据库连接用户名 $pass='root';//对应的密码 $dsn="$dbms:host=$host;dbname=$dbName"; try{ $db=newPDO($dsn,$user,$pass);//初始化一个PDO对象 }catch(PDOException$e){ die("Error!:".$e->getMessage()." "); } $username=isset($_GET['username'])?$_GET['username']:''; $ip=isset($_GET['ip'])?$_GET['ip']:''; $mac=isset($_GET['mac'])?$_GET['mac']:''; $apMac=isset($_GET['apMac'])?$_GET['apMac']:''; $loginTime=isset($_GET['loginTime'])?$_GET['loginTime']:''; $time=date('Y-m-dH:i:s'); //编写sql使用占位符 $sql="insertintotest(username,ip,mac,apMac,loginTime,insert_time) values(:username,:ip,:mac,:apMac,:loginTime,'$time')"; $query=$db->prepare($sql); /** 感觉挺麻烦的 $query->bindParam(':username',$username); $query->bindParam(':ip',$ip); $query->bindParam(':mac',$mac); $query->bindParam(':apMac',$apMac); $query->bindParam(':loginTime',$loginTime); $query->execute(); **/ $result=$query->execute(array( ':username'=>$username, ':ip'=>$ip, ':mac'=>$mac, ':apMac'=>$apMac, ':loginTime'=>$loginTime, ));