|
|
Posted by "Mike" on 12/21/05 04:57
"Mike" <hyatt65@hotmail.com> wrote in message news:...
I'd just like to thank everyone who helped me our with this. I think it's
great that so many people would be so helpful and not expect anything in
return. This list is quite a storehouse of info and I'm learning just from
reading the posts since I joined last week!
Again, thanks all.
-Mike
> ""Kilbride, James"" <James.Kilbride@gd-ais.com> wrote in message
> news:E0C1686B8F45434DA0E0A904672EA1A859C140@MAPF01-MAIL01.ad.gd-ais.com...
> Actually with this idea all you do is reduce $max after each successful
> pull and 'increment' over pictures you already have. That way you never
> have to pull another random number. You just may have to increment
> through the entire set of pulled images if you pulled a high enough
> number.
>
> for($i = 0; $i < $want; $i++) {
> $random = mt_rand(0,$max);
> for($j = 0; $j < $i; $j++) {
> if ($retrieved[$j] < $random) {
> $random++;
> }
> }
> $retrieved[] = $random;
> sort($retrieved);
> $max--;
> }
>
> Guarentees unique choices.
>
>
>
>> > I'm still very green with PHP, but am working to fix that.
>> >
>> > I've searched high and low for an answer to this question
>> and so far
>> > no solution has presented itself. I have a script to
>> populate my web
>> > page with random images:
>> >
>> > <?php
>> > #random images example
>> > #this is your file
>> > $file = "images.txt";
>> > #open the file
>> > $openFile = file($file);
>> > #generate a random number
>> > srand((double)microtime()*1000000);
>> > #get one of the entries in the file
>> > $random_image = $openFile[array_rand($openFile)]; #display
>> the entry
>> > echo "<img src='$random_image' height='170' width='100'></img>"; ?>
>> >
>> >
>> > This works beautifully, but my problem is that sometimes,
>> the same image
>> > displays twice or more on the same page-load. My page
>> requires 10 different
>> > places where my images need to load, but I can't have any
>> duplicate images
>> > show up.
>
>
Navigation:
[Reply to this message]
|