AJAX Mysql Update Not Posting - HELP!

[ipwnzphp]

I am using thjis ajax code but its not posting to my database, the function is being called fine. but its just not posting to the db.

 

function userTyping() {
receiveReq.open("POST", 'getChat.php?chat=1&typing=1', true);
var param = 'action=typing';
receiveReq.send(param);
}

 

here is the php code it is calling

 

// User is typing storage! 
if($_POST['action'] == 'typing') {
$sql = "INSERT INTO simp_live_typing_status (s_id, typing) VALUES (" . db_input($_POST['sid']) . ", '1')";
db_query($sql);
}

 

[phpSensei]

try this

 

function userTyping() {

receiveReq.open("POST", 'getChat.php?chat=1&typing=1', true);

receiveReq.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

param = "action=typing";

receiveReq.send(param);

}