在php中使用javascript数据错误

Question

Using this ajax code i am passing data speedMbps from my javascript to php. however when i tried to use the speedMbps in php i am getting a Undefined index: speedMbps. what should i do so i can use speedMbps in php?

Edited: video_id is send using html form post.

$.ajax({
          method: "POST",
          url: "viewvideo.php",
          data: {speedMbps: speedMbps },
          cache: false
        }).done(function( html ) {
            $( "#speed" ).val( html );
    });

php file

if(isset($_POST['video_id']) && ( $_POST['speedMbps'] )){
$speed = $_POST['speedMbps'];
if ($speed < 100) {

                }

Answer 1

Try something like this :

$.ajax({
          method: "POST",
          url: "viewvideo.php",
          data: {"speedMbps" : speedMbps,"video_id":video_id },
          cache: false
        }).done(function( html ) {
            $( "#speed" ).val( html );
    });