php mysql PDO基本操作

<?PHP  

$dbh = new PDO('MysqL:host=localhost;dbname=localhost','root','');    

$dbh->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);    

$dbh->exec('set names utf8');   

/*添加*/  

//$sql = "INSERT INTO `user` SET `login`=:login AND `password`=:password";   

$sql = "INSERT INTO `user` (`login`,`password`)VALUES (:login,:password)";  $stmt = $dbh->prepare($sql);  $stmt->execute(array(':login'=>'admin1',':password'=>''));    

echo $dbh->lastinsertid();    

/*修改*/  

$sql = "UPDATE `user` SET `password`=:password WHERE `user_id`=:userId";    

$stmt = $dbh->prepare($sql);    

$stmt->execute(array(':userId'=>'7',':password'=>'4607e782c4d86fd5364d7e4508bb10d9'));    

echo $stmt->rowCount();   

/*删除*/  

$sql = "DELETE FROM `user` WHERE `login` LIKE 'admin_'"; //admin%    

$stmt = $dbh->prepare($sql);    

$stmt->execute();    

echo $stmt->rowCount();    

/*查询*/  

$login = 'admin%';    

$sql = "SELECT * FROM `user` WHERE `login` LIKE :login";    

$stmt = $dbh->prepare($sql);    

$stmt->execute(array(':login'=>$login));    

while($row = $stmt->fetch(PDO::FETCH_ASSOC)){       

print_r($row);    

}    

print_r( $stmt->fetchAll(PDO::FETCH_ASSOC));   

?>