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11.27作业-PHP类
风清扬
Original
905 people have browsed it
  1. 把 php公用方法库中的 数据库操作函数, 重写到 Db类中。

class Db{
public $dsn;
public $user;
public $password;

  1. public $pdo;
  2. // 类里面的方法,不需要顺序。
  3. public function __construct($dsn,$user,$password){
  4. $this->dsn = $dsn;
  5. $this->user = $user;
  6. $this->password = $password;
  7. $this->connect();
  8. }
  9. public function connect(){
  10. $this->pdo = new PDO($this->dsn,$this->user,$this->password);
  11. }
  12. public function select($sql){
  13. $arr = $this->pdo->prepare($sql);
  14. return $arr;
  15. }
  16. }
  17. $db = new Db('mysql:host=localhost;dbname=ou','root','root');
  18. $sql = 'select * from user';
  19. $user = $db->pdo->select($sql);
  20. 没有懂。第二节也无法看录播。白天还要上班,先交作业。请老师上课讲一下!
Correcting teacher:查无此人查无此人

Correction status:unqualified

Teacher's comments:11月29号课上,已经把这个作业讲解了。 你去看看,在把作业提交上来。如果不会,在来问我
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