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Banner

Simple script for the rotation of advertising banner.



					
					<?php

					

					/* banner.phtml

					Requisites:

					Copy all banners in a directory

					Banner names must begin with "banner"

					no other files in the directory can begin with "banner"

					Installation:

					Inser the script in the banner folder

					Copy all the banners in the same folder

					Add the following code to the pages

					<a href="www.thelinkedweb.com">

					<img src="http://www.yourwebsite.com/directorybanner/banner.phtml" alt="Banner Random" border=0>

					</a>

					*/

					

					/*

					note:
					
 
					random( $max integer )

					returns a random number between 0 and $max-1;

					*/

					

					function random( $max )
					{

					    $x = rand();

					    $y = getrandmax();

					    $r = $x / $y * ($max -1 );

					    $r = round( $r++ );

					    return $r;

					}

					

					/* Look in the directory to get the banner
					*/

					

					$i = 0;

					$d = dir(".");

					while($entry=$d->read())

					    if (substr($entry,0,6) == "banner")

					        $array[$i++] = $entry;

					        $d->close();

					

					/* Gets the banner
					*/

					

					$r = random( $i );

					

					/* Send the file
					*/

					

					Header( "Pragma: no-cache" );

					Header( "Expires: Monday 01-Jan-80 12:00:00 GMT" );

					Header( "Content-type: image/gif");

					passthru( "cat $array[$r]" );

					?>