how to pass in PHP variable $ID

NZ_Kiwis

Here is my ajax.js code

// JavaScript Document

function UpdateTable(str){



if (str==""){
response.setContentType("text/xml; charset=UTF-8");
response.setHeader("Cache-Control", "no-cache");
document.getElementById("txtHint").innerHTML="";
return;
  } 

if (window.XMLHttpRequest){
	// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();

} else {
// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange=function(){


if (xmlhttp.readyState==4 && xmlhttp.status==200){

document.getElementById("txtHint").innerHTML=xmlhttp.responseText;

}
}


xmlhttp.open("GET","display_table.php",true);
xmlhttp.send();

}

NZ_Kiwis

okay hold on how to i pass a vairable into here

var interval_token = setInterval("UpdateUserOnline()", 6*1000);

My Function now reads

function UpdateTable(str, ID, UserName){

bradgrafelman

Any chance you can elaborate on what the problem is and/or what you're trying to do? For example.. what do you mean "pass in" and where is this to be done?

NZ_Kiwis

It's an ajax update to update a database to say a user is still online.

I want to pass in a userID

ajax.js

// JavaScript Document

function UpdateUserOnline(str, ID, UnixTime, Name){
if (str==""){
  document.getElementById("txtHint").innerHTML="";
  return;
  } 

if (window.XMLHttpRequest){
	// code for IE7+, Firefox, Chrome, Opera, Safari
 xmlhttp=new XMLHttpRequest();
} else {
// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange=function(){

if (xmlhttp.readyState==4 && xmlhttp.status==200){
    document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}

xmlhttp.open("GET","z.php?ID=" + ID, true);
xmlhttp.send();
}

index.php

<script type="text/javascript" src="ajax.js"></script>
<script type="text/javascript">
var interval_token = setInterval("UpdateUserOnline()", 6*1000);
</script>

page z.php just emails so i know it's working, it would be update_table.php and update my database table when working.

The issue is I can't pass variables into UpdateUserOnline class when it's in the SetInterval thingie

johanafm

Assuming the user is logged in, and assuming you are using sessions, you need pass nothing. Send your XHR get/post request, session_start() on the server and use the id stored in $_SESSION. Otherwise users will be able to pass in any id they feel like, thus making other people appear as online.