Question

    $.ajax({
dataType : "html" ,
url: "jquery-loadMoreComments.php?lastComment="+ $(".postedComment:last").attr('id')&"section="+'.$sid.',   
success: function(html) {

I am having this ajax request from one file to other and I am retrieving the url variable in other file like this

$filtered = filter_input(INPUT_GET, "lastComment", FILTER_SANITIZE_URL);
$filtered1 = filter_input(INPUT_GET, "section", FILTER_SANITIZE_URL);

The first variable gets retrieved properly but the second variable is not getting to the other file. And $sid is retrieved by the first file from the url and then is sent via ajax to the second file to continue the request.

I changed the url to this

    url: "jquery-loadMoreComments.php?lastComment="+ $(".postedComment:last").attr('id'),section: '<?= $sid ; ?>',  

then in the second php file to retrieve the $sid I have written this

$filtered = filter_input(INPUT_GET, "section", FILTER_SANITIZE_URL);

but still it is not executing . I think the $sid variable is not passed properly. In the first php file I have not written any code to pass the variabl $sid, how can I do that.

Answer 1

I suspect the problem is with '.$sid' at the end of the URL. You’re probably expecting that to be replaced with the PHP variable, but this doesn’t look like a context where replacement happens.

To make the replacement happen, you need to get back into PHP processing mode, e.g.

"&section=<?= $sid ?>",

Also, rather than constructing the URL parameters by concatenating strings, use the data: parameter to $.ajax and supply an object. jQuery will construct the parameter string automatically for you, with proper URL-encoding. So it should be:

$.ajax({
    dataType : "html" ,
    url: "jquery-loadMoreComments.php",
    data: {
        lastComment: $(".postedComment:last").attr("id"),
        section: '<?= $sid ?>'
    },
    success: function(html) {