有没有办法转换文本框值并分配给PHP变量？

Question

My goal is to get some of the value from ajax data to assign in php variable. As you can see the ajax code below, i could pass the value through a class (edit_id). How to put the value from the textbox to a php variable?

Ajax

$.ajax({
        type: 'POST',
        url: "{{ URL::route('test') }}",
        headers: {'X-CSRF-TOKEN': '{{ csrf_token() }}' },
        data: { "camp_id" : camp_id },
        success: function(data){
          if(data.data.success){
                $('#edit_id').val(data.data.success.id);
                $('#edit_desc').val(data.data.success.description);
                console.log(data.data.success.id); // this will output the id eg. 1
                console.log(data.data.success.description); // this will output the description eg. hello world
          }
        }
});

View

<input type="text" class="form-control" id="edit_id" name="id"> //will diplay textbox with value