Published on: 2005-09-24 - Views: 25427

In this tutorial we'll see a basic script to display random images.
It's really simple but really useful too.

You can use it, for example, to display different header images, so each time that a visitor comes to your website or opens a new page he gets a different header.

You need to create a folder to store the images that you want to rotate (here I have named the folder "shotrotation").

All the images will have to be named "1.jpg", "2.jpg", "3.jpg" etc, images with different names won't show!
Now let's have a look at these simple lines of code.
<?php
$images = 10; //this is the number of images we have to rotate, note that if 
//it\'s bigger than the number of images you will get inexistent images 
//selected, if it\'s smaller some images won't ever be displayed
$path = "shotrotation/"; //this is the path to the folder where 
//the images are stored: you can use a local path as I did, or an 
//absolute path like http://www.yourdomain.com/shotrotation/ note that 
//local paths have to start with the folder name (don't put "/" in 
//fron of it) and terminate with "/"
$random = rand(1,$images); //with the rand PHP function we generate 
//a random number from 1 to our max allowed value
echo "<img src=$path"."$random".".jpg"." border=\'0\'>" //here we print 
//the html code that will show the image
?>