Question

<form name="screenDishForm"  action="bentoQuery.php"  method="POST"> 
        <!--Label and input for the name of dish -->
            <label class="contentLabel"> Name: </label><br> 
            <input class="inputField" type="text" id="dishName" name="dishName" placeholder="E.g. Beef Teriyaki" required><br>

    <!-- Label and Drop down list for the type of dish -->
            <label class="contentLabel"> Type: </label><br> 
            <select class = "inputField" id="dishType" name = "dishType">
                   <option value="mainDish">Main Dish</option>
                   <option value="sideDish">Side Dish</option>
                   <option value="soup">Soup</option>
            </select><br>

    <!--Label and input for the price of dishes -->
            <label class="contentLabel"> Price: </label> <br>
            <input class="inputField" type="number" minimum="0" id="dishPrice" name="dishPrice" required><br>

    <!--Button that will be used to register the dishes. -->
           <button class="btnRegister" type="submit" name="submit"> Register Dish </button>

 </form>

这是我的形式，我将其命名为bentoApp.php

   <?php
     require_once 'dbConn.php';

         $dishName = $_POST['dishName'];
         $dishType = $_POST['dishType'];
         $dishPrice = $_POST['dishPrice'];

       $sql = "INSERT INTO dish(dishName, dishType, dishPrice)
        VALUES ('$this->dishName', '$this->dishType', '$this->dishPrice')";

  ?>

这是我的BentoQuerry.php的内容

我如何获取表格的数据？结果是错误

致命错误：在
中不在对象上下文中时使用$ this

Answer 1

只需使用你的变量$ dishName，$ dishType，$ dishPrice。

$this用于指代您正在使用它的对象的当前实例。您目前没有使用任何对象。

Answer 2

从mysql Values变量中删除$this->。我假设你在这里犯了一个错误，如果不是问题是你将已发布的值分配给变量但没有使用它们。你写的就好像你指的是你目前没有的对象实例，甚至那是不正确的。

这就是你的代码应该是什么样子。

   <?php
     require_once 'dbConn.php';

         $dishName = $_POST['dishName'];
         $dishType = $_POST['dishType'];
         $dishPrice = $_POST['dishPrice'];

       $sql = "INSERT INTO dish(dishName, dishType, dishPrice)
        VALUES ('$dishName', '$dishType', $dishPrice)";

  ?>

如何从表单中获取数据

2 个答案: