http://Check-these.info/BannerRotation.html

Banner rotation by RewriteRules

Example

Banners are stored in main /htdocs with the name of banner-00.jpg to banner-59.jpg

(60 of them, in this case,)

In the image tag, yuou put just <img src="banner.jpg"> , and the RewriteRule serves different banner each minute.

RewriteEngine on 
RewriteBase / 
RewriteRule ^/*banner.jpg$ banner-%{TIME_MIN}.jpg [L]

It can be rotated each second, each day of the month or week,

every ten seconds or ten minute, each hour and so on.

You can store banners in different directory, too.

# Rotate every ten seconds
# You need banner-0.jpg to banner-5.jpg

RewriteEngine on 
RewriteBase / 
RewriteCond %{TIME_SEC} ^(.)
RewriteRule ^/*banner.jpg$ banner-%1.jpg [L]

# Rotate based on the  day of the week
# You need banner-0.jpg to banner-6.jpg

RewriteEngine on 
RewriteBase / 
RewriteRule ^/*banner.jpg$ banner-%{TIME_WDAY}.jpg [L]

# Rotate every hour
# You need banner-00.jpg to banner-23.jpg

RewriteEngine on 
RewriteBase / 
RewriteRule ^/*banner.jpg$ banner-%{TIME_HOUR}.jpg [L]

You can also decide which banner to serve based of other factors,

like referer, browser, language, IP address, requested URL, and so on.

# Referer based banner 
# for people coming from specific links
# You need banner-abc.jpg banner-xyz.jpg banner-zzz.jpg

RewriteEngine on 
RewriteBase / 
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} ^http://(www\.)?(abc|xyz|zzz)\.
RewriteRule ^/*banner.jpg$ banner-%2.jpg [L]

As it doesn't use script, it's very rapid and light weight.

Links

If you want to know more about RewriteRule (mod_rewrite)

See mod_rewrite.html, mod_rewrite-basic.html for more info.

Example: Generic .htaccess Method for sub/pointed domains

This page is http://Check-these.info/BannerRotation.html

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