use PHP variable store javascript variable

[phppaper]

I have a function in the head section:

 

<script type="text/javascript">

    function tempfunction() {

var temp;

      temp = document.form.textfield.value;

  }

  </script>

 

and I want to use a php variable to store the javascript variable for other use.

 

How to do so???

[trq]

You will need to submit the value back to the server (where php runs).