Question

我试图使用php oop显示我的数据库中的所有用户。我真的不知道如何将user.php包含到connectionFile.php或可能起作用的地方。我的代码：user.php：

    public class User{
    protected $firstname;
    protected $lastname;
    protected $email;
    protected $password;
    protected $age;
    protected $role;
    protected $file;
    protected $db;

    public function __construct($DB_con){
       $this->db = $DB_con;
    }

    public function __construct($firstname, $lastname, $email){
        $this->firstname = $firstname;
        $this->lastname = $lastname;
        $this->email = $email;
    }

    public function getFirstname(){
        return $this->firstname;
    }
    public function getLastname(){
        return $this->lastname;
    }
    public function getEmail(){
        return $this->email;
    }

    public function setFirstname($firstname){
        $this->firstname = $firstname;
    }
    public function setLastname($lastname){
        $this->lastname = $lastname;
    }
    public function setEmail($email){
        $this->email = $email;
    }
    public function getAllUsers(){
        try{
            $stmt = $this->db->prepare("select * from user");
            $stmt->execute();
            return $stmt;

        }catch(PDOException $e){
            echo $e->getMessage();
        }
    }
   }

我的connectionFile.php：

require_once ("user.php");
// session_start();
$servername = "localhost";
$username = "root";
$password = "root";
$database = "first_project";
try {
    $conn = new PDO("mysql:host=$servername;dbname=first_project", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
   // echo "Connected successfully"; 
 }
 catch(PDOException $e){
    echo "Connection failed: " . $e->getMessage();
 }

和我的displayResult.php（我还有一个带有表单的页面html）：

 <?php
 require_once("connectionFile.php");
 //include_once 'user.php';
 if(isset($_POST['button'])){
    //$user = new User();
    echo "skksksks";
 }
 else{
    echo "v";
 }

?>

按钮正在工作，我想在按钮帖子中从用户类调用函数getAllusers但我真的不知道如何，因为每次我尝试将该文件包含在任何位置时都会找不到页面。< / p>

Answer 1

您可以创建类的对象来访问方法。

require 'user.php';
$obj=new User($db_con);
$obj->setFirstName('test');

依旧......

请确保你能在php中重载构造函数......我不这么认为..

显示数据库php oop中的所有用户

1 个答案: