Random line of script?

quotaj · 23-11-2009 4:15am #1

Hey,

I want to place an random image on my website. There is a pool of 10 images that it can choose from. Each image will be linked to a different page.

Is there a way of randomly picking a bit of few lines of code each time? Have the image and hyperlink html part of the code randomly selected from a choice of ten...

Thanks for any help!

DonkeyStyle \o/ · 23-11-2009 5:09am

Here's a way to do it in javascript, it's probably better to do it in a server-side language, but you didn't mention what you use.

[HTML]<html>
<head>

<script type="text/javascript">
function randomlink()
{
var images = new Array ('image1.jpg',
'image2.jpg',
'image3.jpg',
'image4.jpg',
'image5.jpg',
'image6.jpg',
'image7.jpg',
'image8.jpg',
'image9.jpg',
'image10.jpg'
);

var urls = new Array ( 'link1.html',
'link2.html',
'link3.html',
'link4.html',
'link5.html',
'link6.html',
'link7.html',
'link8.html',
'link9.html',
'link10.html'
);

var x = Math.floor(Math.random()*(images.length));
document.write("<a href=\""+urls[x]+"\"><img src=\""+images[x]+"\" alt=\"\"></a>");
}
</script>

</head>

<body>
<script>randomlink();</script>

</body>
</html>[/HTML]
Just move <script>randomlink();</script> to where ever you want the image to appear.

quotaj · 23-11-2009 1:50pm

Thanks a lot... I must give that a try.

I use PHP, is there a better way to do it in PHP?

CoNfOuNd · 23-11-2009 2:34pm

You could do it in PHP using the rand() function.

Lots of examples on that page.

none · 24-11-2009 10:37pm

I'm using almost the same JavaScript as DonkeyStyle \o/, just multidimensional array instead of several simple ones. Also, I'd add description (alt/title).

quotaj · 27-11-2009 4:04am

After a bit of researching on PHP rand thanks to the suggestion above, this is what I've ended up with and it's perfect thanks!

[php]<?php

$quotes[] = '<a href="http://www.LINK1.com/" target="_blank"><img src="image1.gif" border="0">';

$quotes[] = '<a href="http://www.LINK2.com/" target="_blank"><img src="image2.gif" border="0">';

$quotes[] = '<a href="http://www.LINK3.com/" target="_blank"><img src="image3.gif" border="0">';

srand ((double) microtime() * 1000000);

$randomimage = rand(0,count($quotes)-1);

echo "" . $quotes[$randomimage] . "";

?>[/php]

And then include this where I want to place the random linked image on the webpage...
[PHP]<?php include "random_image.php"; ?>[/PHP]

I basically altered a "random quote" script a bit. I must tidy up the "" at the end and add the title and alt tags now.

Random line of script?

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