Hello this question is very simple:
1) generally this requirement is used in the business of product list criteria filtering
for example: shoes I want to choose red, number 42
2) use js to get the current url, first and then splice it directly to it
code is as follows:
var host = window.location.href; / / get url
window.location.href = url+ "/ xxx/1"; / / stitching url
solving problems

http_build_query

// 
function parse_url(url)
{
    var a = document.createElement('a');
    a.href = url;
    return {
        source:url,
        protocol:a.protocol.replace(':', ''),
        host:a.hostname,
        port:a.port,
        query:a.search,
        params:(function(){
            var ret = {}, seg = a.search.replace(/^\?/, '').split('&'), len = seg.length, i = 0, s;
            for(;i<len;iPP) {
                if(!seg[i]) {
                    continue;
                }
                s = seg[i].split('=');
                ret[s[0]] = s[1];
            }
            return ret;
        })(),
        file:(a.pathname.match(/\/([^\/?-sharp]+)$/i) || [, ''])[1],
        hash:a.hash.replace('-sharp', ''),
        path:a.pathname.replace(/^([^\/])/, '/$1'),
        segments:a.pathname.replace(/^\//, '').split('/')
    };
}

1. add all links to click events through js
The current page address and the target page address are resolved through parse_url in the
2. event
3. request parameters of the two addresses after merging and parsing
4. stitching the final jump address
5. Block default behavior

if you want to pass php, you have to generate a link through a function

1. resolve the target link
2. merge parameters
3. return the final access link

you can try this

$url = 'xxx.php?xxx=xxx';
$params = [
    'region' => 'abc',
    'status' => 1
];
$urlParams = http_build_query($params);

if(strpos($url, '?')){
    echo $url.$urlParams;
}else{
    echo $url.'?'.$urlParams;
}