Question

I have a POST form in PHP that I’m converting to GET.

The form works and gives me the first page of results without any problems.

But how do I link to the second page? I assume I have to replicate all the GET parameters into the “Next Page” link plus the page number (which the script already handles), but how would I do that?

CLARIFICATION: How do I get all the GET variables from a form onto a link in the page?

Answer 1

simpliest way is too to do something like:

$get = preg_replace("/page=\d+/i", "", $_SERVER['QUERY_STRING']);

$link = "somepage.php?".$get."&page=".($_GET['page']+1);

echo "<a href='".$link."'>Next Page</a>";

That will simply take the get string, remove the page then add the page back in as +1. Please note this would be insecure as people could pass anything in the query string. A better option would be to build the the URL explicitly by checking for each expected $_GET key=>value pair, validating it, then adding it to a link variable. That way any additional bits in the query string wont be echo’d to the page.

EDIT:

Ok so heres a very quick example.

$category = (int)$_GET['cat'];
$keyword = trim($_GET['keyword']);
$keyword = filter_var($keyword, FILTER_SANITIZE_STRING);


$nextlink  = "somepage.php?";
$nextlink .= http_build_query(array(
   "cat" => $category,
   "keyword" => $keyword,
   "page" => $page+1
));

So basically you get the GET var’s you want, validate them, then just use http_build_query and an associative array to build your query string for the link. The security i put in their is very basic, but typecasting numbers and limiting the amount of crud you can stick into a string is a place to start