通过迭代从PHP中获取html表单的输入

Question

I am creating a webpage which display a form with 16 questions, each row of input looks like:

<li>*question 1*</li>
<input type="text" name="answer1" style="height: 40px;" size="50" dir="rtl">

<li>*question 2*</li>
    <input type="text" name="answer2" style="height: 40px;" size="50" dir="rtl">

and so on - i have 16 (html) lines like that (by the way, is there a way to prevent this code duplication? this code smells...) and in the end a 'submit' button.

my php script should receive these answers, and put every answer in a variable called "answer(i)" e.g I can write 16 lines of this kind:

if (isset($_POST['submit'])) {
        $answer1 = $_POST['answer1'];
        $answer2 = $_POST['answer2'];
        ...ect.
        ...
   }

this (also) feels like a lot of code duplication. is there a way to make it more general and efficient so that if i'm looking to add some new question I won't have to goo through all this again? I am new to PHP and HTML, and I though of declaring some functions and call them everytime but when I googled keywords like 'html functions' etc. I didn't find and helping info. edit: The answers labels maybe different than 'answer1, answer2...' and can be a set of different words ('age', 'gender'...)

Answer 1

You could run a loop to go through the POST array and extract the information into another array.

foreach ($_POST as $k => $v) {
      $$k = $v;
}

That will put all of the $_POST data into PHP variables named the same as the form fields generating them (beware you will also get a $submit as well from the button triggering the form).