PHP

suarve · 26 May 2009 at 17:24

Hi,

I have a simple ad rotation script that displays a different ad upon a page refresh. The ads are coming from a text file where the actual is just a bit of very simple html code. The PHP code is below.

What I would like to do is refrssh the ad every few seconds. Any ideas how I do this in PHP?

PHP:

$file = join ('', file ('../../inc/banners2.txt'));	
	$ad = split("~",$file);
	$bannerid = rand(0,(count($ad)-1));
	echo $ad[$banner_id];

Thanks

Dj_Jestar · 26 May 2009 at 17:27

No can do. You'll need JavaScript to do the refreshing.

suarve · 26 May 2009 at 18:57

couldn't I use:

PHP:

header('Refresh:3 ; URL=index.php');

Hatter The Mad · 26 May 2009 at 19:02

To refresh the entire page, yes.. but why would you want to do that? Do you want people to be able to use your site at all?

suarve · 26 May 2009 at 19:10

Hatter The Mad said:
To refresh the entire page, yes.. but why would you want to do that? Do you want people to be able to use your site at all?

Was thinking I could use that some how via an ajax call to refresh just the ad box.....

Hatter The Mad · 26 May 2009 at 19:14

suarve said:
Was thinking I could use that some how via an ajax call to refresh just the ad box.....

Serious over-engineering. Just use JavaScript to rotate your adverts.

suarve · 27 May 2009 at 12:23

Ah cool, found a tiny bit of js to rotate the ads

sethiroth66 · 27 May 2009 at 12:40

a simple way that wouldn't require javascript would have been to just use an iframe and use that as a separate file, its how i'd do it.
i know iframes fail but seems easier

Dj_Jestar · 27 May 2009 at 12:52

suarve said:
Was thinking I could use that some how via an ajax call to refresh just the ad box.....

Just what in the blue blazes do you actually think AJAX is?!

Asynchronous
JAVASCRIPT
And
X(ht)ml

suarve · 27 May 2009 at 13:41

Dj_Jestar said:
Just what in the blue blazes do you actually think AJAX is?!

Asynchronous
JAVASCRIPT
And
X(ht)ml

Well I meant a biot of simple javascript, nothing asynchronous

Inquisitor · 27 May 2009 at 15:02

sethiroth66 said:
a simple way that wouldn't require javascript would have been to just use an iframe and use that as a separate file, its how i'd do it.
i know iframes fail but seems easier

It's actually easier to use JavaScript really, and certainly better practice.

Dj_Jestar · 27 May 2009 at 15:26

suarve said:
Well I meant a biot of simple javascript, nothing asynchronous

It'll certainly need an XmlHTTPRequest at the least.

Code:

function onLoad() {
  setInterval(30, "changeAd()");
}

if( typeof XMLHttpRequest == "undefined" ) XMLHttpRequest = function() {
  try { return new ActiveXObject("Msxml2.XMLHTTP.6.0") } catch(e) {}
  try { return new ActiveXObject("Msxml2.XMLHTTP.3.0") } catch(e) {}
  try { return new ActiveXObject("Msxml2.XMLHTTP") } catch(e) {}
  try { return new ActiveXObject("Microsoft.XMLHTTP") } catch(e) {}
  throw new Error( "This browser does not support XMLHttpRequest." )
};


function changeAd() {
  var http = new XMLHttpRequest();
  http.open("GET", "http://www.yourdomain.com/advert.php");
  http.onreadystatechange = function () {
    if (http.readystate == 4) {
      document.getElementById("ad").innerHTML = http.responseText;
    }
  }
}