pdo数据操作，3-4，0724

require 'connect.php';
    $linshi =  $dbh->prepare('UPDATE `category` SET `name` = :name, `alias`=:alias WHERE `cate_id` = :cate_id ');
    if($linshi->execute(['name'=>"999",'alias'=>"8888",'cate_id'=>13])){
        if($linshi->rowCount()>0){
            echo "ok".$dbh->lastInsertId();
        }
    }

预处理对象的字段名后面跟着的“预处理变量”，要和字段名一致