Rotate your logos

This template mod randomly picks an image from a specified folder to be used as the forum logo.

In your phpinclude-template, add this code:

PHP Code:

$logos = array();
$logodir = "images/";

function make_seed() {
    list($usec, $sec) = explode(' ', microtime());
    return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());

if ($handle = opendir($logodir)) {
    while (false !== ($file = readdir($handle))) { 
        if ($file != "." && $file != "..") { 
            array_push ($logos, $logodir . $file); 
        } 
    }
    closedir($handle);
    // $logo = rand(0, count ($logos));
    $logo = rand(0, count ($logos) - 1); // Corrected a small bug
    $titleimage = $logos[$logo];
} 


Change the value of $logodir to the directory where you have your logos.

and in your header-template, change { titleimage} to $titleimage

That should be it, really.

[tkieffer]

Nifty! It's all fixed.

You get a big shiny golden star in my book!

[geniuscrew]

Originally posted by Sparkz
Besides, this saves bandwidth, as it is server side.

Using DHTML, you'd have to pass the whole list if images to the client, plus the code to actually do the pick which image to show.

That's why i don't use it lol

Nice 'hack' though :bunny:

[Sparkz]

If you only have a few images to rotate, you could just set the content of $logos manually. Would result in a bit less processing time.

Something like:

PHP Code:

$logodir = "images/";
$logos = array
(
   $logodir . "filename.png",
   $logodir . "filename2.png"
);

function make_seed() {
    list($usec, $sec) = explode(' ', microtime());
    return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());

$logo = rand(0, count ($logos) - 1);
$titleimage = $logos[$logo]; 


Would save the server from having to list the directory every time a page was loaded.

[tkieffer]

Excellent! I upgraded to the predefined array and it is noticably faster.

[afterlab]

Is there anyway that I can get it show the random image plus a link for each one. Basically, all I need is another variable that just displays the filename, without the directory, and extensions.

[afterlab]

Anyone? [BUMP]

[Sparkz]

Try this:

PHP Code:

$logodir = "images/";
$logos = array
(
   array ($logodir . "filename.png","http://mylink/"),
   array ($logodir . "filename2.png","http://anotherlink/")
);

function make_seed() {
    list($usec, $sec) = explode(' ', microtime());
    return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());

$logo = rand(0, count ($logos) - 1);
list ($titleimage, $titleurl) = $logos[$logo]; 


Now you can use $titleimage and $titleurl in your templates.

[afterlab]

Worked perfect, thanks.

[Sparkz]

My pleasure

[Sparkz]

Just looked at your site... Like what you did with this mod