How Do They Do It? (Banner Rotation)

[al_m473]

http://clwydmc.co.uk/

the home page image at the top of the page changes each time you enter the page, how is this done?

Al

[EamonnMac]

I don’t see a Javascript being called, so perhaps a PHP image rotator? It certainly seems to be a random selection, several refreshes doesn’t seem to be revealing any particular order…

Matt Mullenweg developed the code for a method to achieve this here: http://ma.tt/scripts/randomimage/ (it’s been improved upon since, but you’ll get all the detail from the site anyhow).

EDIT – you might try this with the buffs in the Javascript or PHP forums, you’ll certainly get a better answer! ;)

[freewebsites]

It will automatically change because of the links on it.

[TheDoc]

I’m a huge fan of PHP for this. So much so that I’m moving this topic to the PHP section!

You can simply use the rand() function to achieve the results. Here’s a really simple explanation:

http://php.about.com/od/finishedphp1/qt … banner.htm

Essentially, it’ll be something like this:

<?php
$num = rand(1, 5);
?>

<img class="classname" alt="" src="images/banner-<?php echo $num; ?>.jpg" />

[EamonnMac]

I like that a lot – look waaaaaay simpler than any other method I’ve seen. Nice one.

[Author]

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