This is a file called test.php which is calling the file time_test.php.
Code:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>PHP + Ajax auto refresh DIV</title>
<script>
var xmlhttp = false ;

if (!xmlhttp && typeof XMLHttpRequest != 'undefined')
{
  try {
        xmlhttp = new XMLHttpRequest ();
  }
  catch (e) {
  xmlhttp = false}
}
function myXMLHttpRequest ()
{
  var xmlhttplocal;
  try {
        xmlhttplocal = new ActiveXObject ("Msxml2.XMLHTTP")}
  catch (e) {
        try {
        xmlhttplocal = new ActiveXObject ("Microsoft.XMLHTTP")}
        catch (E) {
          xmlhttplocal = false;
        }
  }

  if (!xmlhttplocal && typeof XMLHttpRequest != 'undefined') {
        try {
          var xmlhttplocal = new XMLHttpRequest ();
        }
        catch (e) {
          var xmlhttplocal = false;
        }
  }
  return (xmlhttplocal);
}
var mnmxmlhttp = Array ();
var mnmPrevColor = Array ();
var responsestring = Array ();
var myxmlhttp = Array ();
var responseString = new String;

var i=0;
var ii = 0;
function ajax_update()
{

        url = "time_test.php";
        target2 = document.getElementById ('content');

        ii = i++;

        var content = "i=" + ii ;

        mnmxmlhttp = new myXMLHttpRequest ();
        if (mnmxmlhttp) {
                        mnmxmlhttp.open ("POST", url, true);
                        mnmxmlhttp.setRequestHeader ('Content-Type',
                                           'application/x-www-form-urlencoded');
   mnmxmlhttp.send (content);
                        errormatch = new RegExp ("^ERROR:");

                        target2 = document.getElementById ('content');

                        mnmxmlhttp.onreadystatechange = function () {
                                if (mnmxmlhttp.readyState == 4) {
                                        mnmString = mnmxmlhttp.responseText;

                                        if (mnmString.match (errormatch)) {
                                                mnmString = mnmString.substring (6, mnmString.length);

                                                target = document.getElementById ('content');
                                                target2.innerHTML = mnmString;

                                        } else {
                                                target = document.getElementById ('content');
                                                target2.innerHTML = mnmString;

                                        }
                                }
                        }
                }


        setTimeout('ajax_update()',300);
}

</script>

<body onload="ajax_update();">
<div id="content">Loading<div>

</body>

</html>
time_test.php
Code:
$tim=time();
print_r($tim);
1) Can I include time_test.php with test.php and make it a single file instead of 2 different file.

How to change the ajax script if the time_test.php is also inclded in the same file??