Question

I have been looking around the internet for examples of an AJAX function which gets the latest messages from a database, I have been playing around with the code but I am stuck, currently I don’t know how I get the data from the php file to a variable in JQuery. sounds confusing maybe looking at my code will help.

any help is much appreciated.

JQuery code

$.ajax({
    type: "GET", url: "include/process.php", 
    data:{
       getLatestActivity: "true",
       toUser: "4"
    },
    success: function(data){
       alert("data: "+data);                   
    }
}); 

php processing request

function getLatestActivity(){
   global $session;

   $data = $session->getLatestActivity(mysql_real_escape_string($_REQUEST['toUser']));

   if($data){//successful
      return $data;
   }
}

The data function only prints out “data:”, Thanks in advance

Answer 1

In order to pass data from PHP to Javascript you need to echo a string/json representation of what ever data you are trying to return. Note: echo json_encode($data);

function getLatestActivity(){
   global $session;

   $data = $session->getLatestActivity(mysql_real_escape_string($_REQUEST['toUser']));

   if($data){//successful
      echo json_encode($data);
   }
}