Passing Javascript variable to PHP, through select form

Question

So my exact problem is, I have a select form. There are 4 options in there, with values 1, 2, 3, and 4. There's a button form next to the select. Whenever I click on the button, it should navigate me to the select form's selected option's location (for example index.php?page=1). How can I solve this problem? I've read its impossible due to the php's server sides mechanic, etc, but there must be a way.. So far I've got an onclick event for the button, like...: location.href='index.php?page=.. and whats going in there ..

Answer 1

it will work

<select id="some_id">
  <option value="1">1</option>
  <option value="2">2</option>
  <option value="3">3</option>
  <option value="4">4</option>
</select>
<button type="button" onclick="window.location.href='index.php?page='+document.getElementById('some_id').value;">Go</button>

Answer 2

A normal GET form should work.

<form action="index.php" method="get">
    <select name="page">
        <option value="1">Page Name</option>
        ...
    </select>
    <input type="submit" value="Submit">
</form>