php - Using $_GET method with forms PHP without changing url?

Question

http://example.com/bills.php?sort=highest 
http://example.com/bills.php?sort=alpha
http://example.com/bills.php?sort=lowest

So the urls aboves sort by highest, alphabetical and lowest. They use the $_GET method with the use of a form. I was wondering if there was a way to submit the form/get the $_GET data without changing the url?

<form action="bills.php" method="get">
    <select onchange="this.form.submit();" name="sort" class="right sort">
        <option>What would you like to sort by?</option>
        <option value="highest" <?php if(isset($_GET['sort']) && $_GET['sort'] == 'highest'){?> selected="selected" <?php } ?>>Highest to Lowest</option>
        <option value="lowest" <?php if(isset($_GET['sort'])&& $_GET['sort'] == 'lowest'){?> selected="selected" <?php } ?>>Lowest to Highest</option>
        <option value="alpha" <?php if(isset($_GET['sort'])&& $_GET['sort'] == 'alpha'){?> selected="selected" <?php } ?>>Alphabetically</option>
    </select> 
</form>

Above is the code in which I am able to submit a new sort request.

I would like to make my url stay at example.com/bills.php would that be possible?

Would this be possible rewriting the url using .htaccess? I have tried a URL rewriting method which allows me to visit http://example.com/bills/alpha and it works fine, but when I select a new query, it turns into http://example.com/bills/bills/?sort=alpha.

Here's my .htaccess

RewriteEngine On
RewriteBase /
RewriteRule ^bills/(.*)$ /bills.php?id=$1

Answer 1

Using AJAX, you can solve this problem. No need to do any changes in .htaccess. Here is the code which can helps you :

 $(".right").change(function(){
    $.get("YourFile.php",{"sort":$(this).val()},function(res){
       alert(res);
   });
});