random images

hey guys, just wondering if anyone knows what the code is for this ;

say i have a few images on the frontend of my website, and i would like the image to change everytime the website refreshed.

thx

It would look something like this :

[quote]


[/quote]

I have used this for quite a long time..... and it works well for me.....

only two things to say really :
1) make sure all the paths to your imagesa are correct
2) make sure your iamges are all the same size EXACTLY!!!

and finally.... you can have as many images as you want to have.... just add them into the array

sorry can't see anything in ur post?!?

I have what you described on one of my sites (using client side code)...it's kinda messy but it works....

code in index file
[html]

[/html]

code in my JS file
[html]
//...
function selectsplash()
{
img=selectsplash.arguments[Math.floor((Math.random() * selectsplash.arguments.length))]
}
//...
function writeasplash()
{
selectsplash("1.jpg","3.jpg","4.jpg","5.jpg","6.jpg","7.jpg","8.jpg","9.jpg","31.jpg");
document.write("");
}
[/html]

Talos.... i have a small chunk of code if you want it .... write me an email as i cant get the code to work in here..... for some reason

I'd use PHP for this. Add my image paths on separate lines in a text file, and

[php]
$arrImages = file('the_text_file.txt');
$iRand = rand(0, count($arrImages)-1);
echo '';
?>
[/php]

At least I think that should work ;) And if the images are different sizes, then just store the whole 'img src...' line in the text file and just go echo $arrImages[$iRand]; instead of all that html. Good luck.

You could also (instead of using that text file) just gather a bunch of images from a directory into an array, then use the count(array) to get the random number....

This would at least make it so all you need to do is upload the images into that dir and never have to edit a path file. (hmmm saves about 10 seconds on your life. Equiv to maybe one cigarette? - so at least you can smoke a cigarette and not have to worry that you just had to edit a text file.) :rolleyes:

[php]
$path = "./path/to/hiZZouse/";
$num = 0;

if ( is_dir($path) ) {

if ( $rand_dir = opendir($path) ) {

while ( $img = readdir($rand_dir) !== false ) {

$img_array[$num] = $img; // or if you want a full path:
// $img_path[$num] = $path."/".$img;

} # end while

closedir($rand_dir);

} # end if

} # end if
[/php]

That should work if I didn't bung it up.

I use the one marble uses, but I can only get it to work every once and a while, I am horrible with coding. :p

Or you can make it so that it sets a cookie so that the same splash won't come back two times in a row:

[php]

$foldername="splashes";

if ($handle = opendir($foldername)) {
while (false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
if (eregi(".jpg$",$file) or eregi(".gif$",$file)) {
$filelist[] = $file;
}
}
}
closedir($handle);
}

$splash=$filelist[rand(0, count($filelist)-1)];
while (isset($_COOKIE['splash']) && eregi($link, $_COOKIE['splash'])) {
$splash=$filelist[rand(0, count($filelist)-1)];
}
setcookie('splash', $splash, time()+30);

echo "";
?>
[/php]

One thing I forgot (and might be the reason it isn't showing up sometimes.) is with *nix machines when you do a file list you will get the "." and ".." files. So you will have to run a check in the while loop:

[php]
while ( $img = readdir($rand_dir) !== false ) {

if ( $img != "." || $img != ".." ) {

$img_array[$num] = $img; // or if you want a full path:
// $img_path[$num] = $path."/".$img;

} # end while
}
[/php]