PHP 用 1 个按钮提交多个表单

Question

我想提交多个表单，所有表单外只有 1 个按钮。这是 index.php <form id="allform" class = "NameInput" action="addToCartFood.php" method="POST">            Name:   <input type="text" class = "inputName" name="Name" value=""><br> </form> <form id="allform" action="addToCartFood.php"  method="POST">            Date:                   <select name="Date" class = "Date">                <option value="26">26</option>                <option value="27">27</option>                <option value="28">28</option>            </select>            July 2020</form><form id="allform" action="addToCartFood.php" method="POST">            Adult:                  <select id = "selectboxAdult" name="Adult" class = "Adult" onchange = "calculateAll(<?php echo $_SESSION['price'];?>)">                <option value="1">1</option>                <option value="2">2</option>                <option value="3">3</option>                <option value="4">4</option>            </select></form><input  type="submit" class = "submitbtn" form="allform" value="Add to Cart">当我单击按钮时，它将转到 addToCartFood.php，这些是代码$_SESSION['Date'] = $_POST['Date'];$_SESSION['Name'] = $_POST['Name'];$_SESSION['AdultQ'] = $_POST['Adult'];$_SESSION['KidsQ'] = $_POST['Kids'];$_SESSION['telnum'] = $_POST['telnum'];$_SESSION['comment'] = $_POST['comment'];

Answer 1

为什么有多种形式？只需将它们全部合并为一种形式，因为动作和方法对所有人都是相同的

<form id="allform" class = "NameInput" action="addToCartFood.php" method="POST">

            Name:   <input type="text" class = "inputName" name="Name" value=""><br>

            Date:       

            <select name="Date" class = "Date">

                <option value="26">26</option>

                <option value="27">27</option>

                <option value="28">28</option>

            </select>

            July 2020

            Adult:      

            <select id = "selectboxAdult" name="Adult" class = "Adult" onchange = "calculateAll(<?php echo $_SESSION['price'];?>)">

                <option value="1">1</option>

                <option value="2">2</option>

                <option value="3">3</option>

                <option value="4">4</option>

            </select>

<input  type="submit" class = "submitbtn" form="allform" value="Add to Cart">

</form>