post and get in the same submission

Hello,

I like to send and reading variable with post and get. Is it possible?

I have do that but that doesn't work

<form id="test" action="test.php" method="post">
<input type="hidden" name="a_recup" value="variable_ici"/>
</form>
<a href='test.php?town=Montreal' onclick='document.getElementById("test").submit()'>link</a>
<a href='test.php?town=New_York' onclick='document.getElementById("test").submit()'>Link1</a>
<?php

$variable=$_POST['a_recup'];

echo $variable;

$ville=$_GET['town'];
echo $town;

?> 

Thanks for your help

Any reason it has to be GET? Why can't you just put those into the form as normal form controls, like a radio button or even submit button?

My links are generated with a SELECT So I don't know how many town or link and I only  want have one town not all. How to do that?