如何用PHP计算动态HTML表单输入数组?

I have a button on a page that when a user pushes it, it creates another "Contact" field on the page. The Contact field allows them to add a new contact to their profile. Also, they can click the button as many times as they want, and it will create that many "Contact" fields.

我在页面上有一个按钮，当用户按它时，它会在页面上创建另一个“Contact”字段。联系人字段允许他们在个人资料中添加一个新的联系人。而且，他们可以按自己想要的次数点击这个按钮，它会创建许多“联系人”字段。

The problem though is that I am having a hard time figuring how many "Contact" fileds have been added. Here is some HTML that is generated when the button is clicked:

但问题是，我很难计算添加了多少“联系人”文件。以下是单击按钮时生成的一些HTML:

<div class="item">
    <label for="in-1v">First Name <span>*</span></label>
    <div class="text">
        <input type="text" id="in-1-0" name="member[0][fname]" value="" />
    </div>
</div>
<div class="item">
    <label for="in-2-0">Last Name <span>*</span></label>
    <div class="text">
        <input type="text" id="in-2-0" name="member[0][lname]" value="" />
    </div>
</div>

Each time the button is clicked, name="member[0][lname]" will become name="member[1][lname]" and will continue to increment each time the button is clicked. As stated earlier, the user can do this as many times as they want on the page.

每次单击按钮时，name=“member[0][lname]”将变为name=“member[1][lname]”，并在每次单击按钮时继续增加。如前所述，用户可以在页面上任意多次执行此操作。

I am using PHP to loop through the multidimensional array:

我正在使用PHP对多维数组进行循环:

$array = $_POST['member'] ;
foreach($array as $array_element) {
  $fname = $array_element['fname'];
  $lname = $array_element['lname'];
}

How can I use PHP to determine how many fileds have been added so I can loop through them?

如何使用PHP确定添加了多少文件，以便循环使用?

Any help is greatly appreciated!

非常感谢您的帮助!

1 个解决方案

#1

You can simply get a count like so:

你可以简单地计算一下:

$count = count($_POST['member']);

You could also then modify your loop to look like this:

你也可以修改你的循环，让它看起来像这样:

// First check to see if member is set and is a valid array
if (!empty($_POST['member']) && is_array($_POST['member'])) {
    $count = count($_POST['member']);
    for ($i = 0; $i < $count; $i++) {
        $fname = $_POST['member'][$i]['fname'];
        $lname = $_POST['member'][$i]['lname'];
    }
}

#1