dataType: "json" won't work
I'm trying to send back multiple variables from a php file to ajax using json in an array. The code in the php file works perfectly and does everything with my database like it should. But as soon as I add dataType: "json" in ajax, nothing happens in the php file anymore. I googled a bit and some people mentioned it could be a browser problem, but so far it doesn't work in either firefox, chrome or IE. I'm using the latest version of jQuery.

This is what happens inside php:

    <?php
    //Create variables and update database

    echo json_encode(array("id" => "$realid", "un" => "$username", "date" => "$date"));
    ?>

And this is the ajax code:

    .ajax(
	{
       url: 'UpdateComments.php',
       type: 'POST',
       dataType: "json",
       data: 
	   {
	   	  type: "add",
          comment: $("#comment").val(),
		  id: videoID  
   	   },
	   success: function (data) 
	   {
           //Get the data variables from json and display them on page
	   }
	});

I'm clueless on this, any advice would be greatly appreciated!
dataType: "json" won't work
===

I'm trying to send back multiple variables from a php file to ajax using json in an array. The code in the php file works perfectly and does everything with my database like it should. But as soon as I add dataType: "json" in ajax, nothing happens in the php file anymore. I googled a bit and some people mentioned it could be a browser problem, but so far it doesn't work in either firefox, chrome or IE. I'm using the latest version of jQuery.

This is what happens inside php:

    <?php
    //Create variables and update database

    echo json_encode(array("id" => "$realid", "un" => "$username", "date" => "$date"));
    ?>

And this is the ajax code:

    .ajax(
	{
       url: 'UpdateComments.php',
       type: 'POST',
       dataType: "json",
       data: 
	   {
	   	  type: "add",
          comment: $("#comment").val(),
		  id: videoID  
   	   },
	   success: function (data) 
	   {
           //Get the data variables from json and display them on page
	   }
	});

I'm clueless on this, any advice would be greatly appreciated!