如何在没有提交和没有ajax的情况下将输入框值输入php变量？

Question

I have a hidden input, as follows -

<input type='hidden' id='question_number' name='question_number' value='100'/>

I need the value of question_number into a php variable, without submitting. I know that in jquery it can be done by -

var q_no = $('#question_number').val();

but I don't know how to send it to php variable.

Also I don't want to create a new file just to get the 'question_number' by ajax. I don't know if this is possible without submitting and without ajax.

p.s. I found a related question, but I couldn't not found working answer there.

Edit-1. I know that PHP is server-side and jquery/javascript is client side, before posting this question. But, I was thinking, if a php code, can search through entire page of this particular input type, and then parse its value. I am NOT a php expert, so I can't construct this on my own. I need this value in PHP for further coding.

Edit-2. Please read Edit 1, before negative voting.

Answer 1

That is not possible. Javascript runs on client, and PHP runs on the server.