php - 发送数据按钮在 PHP 上不起作用

问题描述

为了测试将用户输入到 html 中的数据并将其放在屏幕上的代码，我制作了一个 HTML 代码来获取用户在某些字段中填写的数据，并在用户单击按钮后发送数据出现在屏幕上，数据不发送。也没有出现任何错误消息。

请问，谁能帮帮我？

index.php 类是主类，其中包含 html 和引导代码。model.php 类提供了将数据发送到屏幕上的代码。

index.php 的类

<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous">

    <title>Hello, world!</title>
  </head>
  <body>
  <div class = "container">
    <div class = "row">
      <div class = "col-md-12 mt-5">
        <h1 class = "text-center">PHP OOP CRUD TUTORIAL</h1>
        <hr style = "height: 1px; color: black; background-color:black;">
      </div>
    </div>
    <div class = "row">
      <div class = "col-md-5 mx-auto">

        <?php
        include 'model.php';
        $model = new Model();
        $insert = $model->insert();
        ?>
        <form action = "" method = "">
          <div class = "form-group">
            <label for = "">Name</label>
            <input type = "text" name = "name" class = "form-control">
        </div>

          <div class = "form-group">
            <label for = "">Email</label>
            <input type = "email" name = "email" class = "form-control">
          </div>

          <div class = "form-group">
            <label for = "">Mobile No.</label>
            <input type = "text" name = "mobile" class = "form-control">
          </div>

          <div class = "form-group">
            <label for = "">Address</label>
            <textarea name ="address" id = "" cols = "" rows = "3" class = "form-control"></textarea>
            <br />
          </div>

          <div class = "form-group">
            <button type = "submit" name = "submit" class = "btn btn-primary">Submit</button>
          </div>
        </form>
      </div>
    </div>
  </div>

    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/js/bootstrap.bundle.min.js" integrity="sha384-gtEjrD/SeCtmISkJkNUaaKMoLD0//ElJ19smozuHV6z3Iehds+3Ulb9Bn9Plx0x4" crossorigin="anonymous"></script>
  </body>
</html>```

Class of model.php

```<?php

    class Model {
        private $server = "localhost";
        private $username ="root";
        private $password;
        private $db = "crud";
        private $conn;

        public function __construct(){
            try {
                $this->conn = new mysqli($this->server, $this->username, $this->password, $this->db);
            } catch (Exception $e){
                echo "Connection failed". $e->getMessage();
            }
        }

        public function insert() {
            if(isset($_POST['submit'])) {
                if(isset($_POST['name']) && isset($_POST['email']) && isset($_POST['mobile']) && isset($_POST['address'])) {
                    if(!empty($_POST['name']) && !empty($_POST['email']) && !empty($_POST['mobile']) && !empty($_POST['address'])) {

                    echo     $name =  $_POST['name'];
                    echo     $mobile = $_POST['mobile'];
                    echo     $email = $_POST['email'];
                    echo     $address= $_POST['address'];   

                        } else {
                            echo "<script>alert('empty');</script>";
                        }
                    }
                }
            }
        }
    ?>```

标签： phphtml

php - 发送数据按钮在 PHP 上不起作用

问题描述

解决方案

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