Rotating ads in order

I see a bunch of scripts for ad rotation based on the random function

but how can i rotate ads in order every time a page refreshes?

first showing ad1 second ad2 etc

 

use file or database to recorder the current index

 

how would i do it with a file?

 

First, create a text file containing the ads, and call it ads.txt. Put one ad on each line

ad text 1
ad text 2
ad text 3

Code (markup):

Next, use this code to display each ad in sequence as you visit the page. The code below stores the current ad counter in a file, so make sure you have write permissions wherever you decide to store the file.

If the file does not exist, the script creates it and start the ad counting at the first ad. When the last ad is reached, the script starts over at the first ad.

<?php

// set these to your counter file name and ad links file name
// make sure you have WRITE permissions on the counter.txt file!
$counter_file = './counter.txt';
$ads_file = './ads.txt';

// first retrieve the ads so that we know how many there are
$ads = @file($ads_file,FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);

// TODO: you might want to do something if no ads or ads are missing!

// now retrieve the next ad to display and update the counter in the file
if (($fh = @fopen($counter_file,'a+')) === false)
	$ad=0;
else
{
	@flock($fh,LOCK_EX);
	@fseek($fh,0);
	$ad=@fgets($fh);
	if ($ad === false)
		$ad = 0;
	else
	{
		$ad = intval($ad);
		// past the end of the ads? start over
		if ($ad >= count($ads))
			$ad = 0;
	}
	@ftruncate($fh,0);
	@fputs($fh, $ad+1);
	@flock($fh,LOCK_UN);
	@fclose($fh);
}

// now get the actual ad text to display
$current_ad = $ads[$ad];

// and echo it out, or do whatever you need with it
echo $current_ad;
?>

PHP:

 

thanks!!!!

 

You also can try this one： Ad Rotator
http://phpclasses.promoxy.com/browse/package/1978.html