php-mysql-pdo

 1 php
 2     const DSN = "mysql:host=127.0.0.1:3306;dbname=test";
 3     const USER_NAME = "dba";
 4     const PASSWORD = "dba";
 5 
 6     try{
 7         //1.创建PDO对象
 8         $pdo = new PDO(DSN,USER_NAME,PASSWORD);
 9         //2.设置编码格式
10         $pdo->exec("SET names utf8");
11         //3.设置错误使用的异常模式
12         $pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
13 
14     }catch (PDOException $e){
15         echo $e->getMessage();
16         exit;
17     }
18 
19     try{
20         //使用PDO中的方法执行SQL语句
21         $sql = "select * from large_user_log";
22         $rows = $pdo->query($sql);
23         while($row = $rows->fetch(\PDO::FETCH_ASSOC)){
24             $data[] = $row['id'];
25         }
26 
27         // $goods = $rows->fetchAll(PDO::FETCH_ASSOC);
28 
29         //返回主键方法
30         var_dump($rows);
31         var_dump($data);
32 
33     }catch (PDOException $e){
34         echo "错误原因为:".$e->getMessage();
35         exit;
36     }