how to hide get parameters in url php

1function strip_param_from_url( $url, $param ) {
2    $base_url = strtok($url, '?');              // Get the base url
3    $parsed_url = parse_url($url);              // Parse it 
4    $query = $parsed_url['query'];              // Get the query string
5    parse_str( $query, $parameters );           // Convert Parameters into array
6    unset( $parameters[$param] );               // Delete the one you want
7    $new_query = http_build_query($parameters); // Rebuilt query string
8    return $base_url.'?'.$new_query;            // Finally url is ready
9}
10// Usage
11echo strip_param_from_url( 'http://url.com/search/?location=london&page_number=1', 
12	'location' )

1<a href="#" onclick="postLogin()">Log me into this website</a>
2
3<script type="text/javascript">
4function postLogin() {
5    var form = document.createElement("form");
6    form.setAttribute("method", "post");
7    form.setAttribute("action", "http://search.mywebsite.com/login.aspx");
8
9    var params = {checktype: 'uid', user: 'adam', password: 'pass1234', profile: 'dart', defaultdb: 'kts'};
10    for(var key in params) {
11        if(params.hasOwnProperty(key)) {
12            var hiddenField = document.createElement("input");
13            hiddenField.setAttribute("type", "hidden");
14            hiddenField.setAttribute("name", key);
15            hiddenField.setAttribute("value", params[key]);
16
17            form.appendChild(hiddenField);
18         }
19    }
20
21    document.body.appendChild(form);
22    form.submit();
23}
24</script>