Randomly generate a list of letters and numbers. For an example, have a look at http://www.icthus.net/CGI-City/tut_random2.shtml. You can modify it like this: 
@array = (0..9,a..z,A..Z);
srand;
foreach (1..5) 
{    
    $rand = int(rand scalar(@array));    
    push (@selected, $rand);
}

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I suppose you already have the necessary alphanumeric set of image files. Just use the @selected array to incorporate the images to your document, like this: 
for ($i; $i<5; $i++)
{
    print "<img src='image_dir/$selected[$i].jpg' border=0>";
}

[download]
Then make a variable out of @selected to check it once the form has been submitted: 
$check_var = "@selected";

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Pass it on to the cgi script that will do the checking and you're done.

I hope this helps as the only thing I've been doing around here is ask questions. ;-)

In reply to Re: Stop Form Hurling by emav
in thread Stop Form Hurling by awohld

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