How to change api URL attributes(values) in SLIM - rest

Question

I am doing pagination in REST api developed over slim.
Using below API to get current uri
(string) $request->getUri();
RESULT ::http://localhost/slim/test_app/test/public/api/actions/?page=2
But now for next request i need to replace the page number in current url to (+1) ie 3 here and pass in data returned to user like below
{
"data":[
//data
]
"next": http://localhost/slim/test_app/test/public/api/actions/?page=3
}
What could be the best way to replace the page number ? Do we have any direct api for this,to just replace the attributes ?

Answer 1

I added a function to merge attributes and than bind the query to url as below function
private function merge_querystring($url = null,$query = null,$recursive = false)
{
if($url == null)
return false;
if($query == null)
return $url;
// split the url into it's components
$url_components = parse_url($url);
// if we have the query string but no query on the original url
// just return the URL + query string
if(empty($url_components['query']))
return $url.'?'.ltrim($query,'?');
// turn the url's query string into an array
parse_str($url_components['query'],$original_query_string);
// turn the query string into an array
parse_str(parse_url($query,PHP_URL_QUERY),$merged_query_string);
// merge the query string
if($recursive == true)
$merged_result = array_merge_recursive($original_query_string,$merged_query_string);
else
$merged_result = array_merge($original_query_string,$merged_query_string);
// Find the original query string in the URL and replace it with the new one
return str_replace($url_components['query'],http_build_query($merged_result),$url);
}
and i use below to add query to url
$postQuery["page"]=$currentpage+1;
//print_r($postQuery);
//echo http_build_query($postQuery);
$data["next"]= $this->merge_querystring($request->getUri(),"?".http_build_query($postQuery));

Answer 2

You can replace pagination value by string manipulation. But you can also using what Slim provide.
Slim\Http\Uri class, which implements Psr\Http\Message\UriInterface, has withQuery() method that will replace current query string.
It will return cloned Slim\Http\Uri instance with its query string replaced.
$query = $request->getQueryParams();
$query['page'] = $query['page'] + 1;
$url = $request->getUri();
$nextUrl = $url->withQuery(http_build_query($query));
$data['next'] = (string) $nexUrl;