Re: PHP random n. problem?

Dear Jacek, phpAds isn't very random because it uses the shuffle function to randomize the banners. If you can wait a few weeks digi-ads 2.0 will be released with an algorithm better than phpAds that supports banner weight (currently uses phpAds algorithm). digi-ads is availabe on my website at http://www.digi-fx.net Andrew digi-FX ------------------------------- http://www.digi-FX.net ----- Original Message ----- From: Jacek <jacek@oi.idl.krakow.pl> To: <php-general@lists.php.net> Sent: Friday, July 14, 2000 10:46 AM Subject: [PHP] PHP random n. problem? > Are there any known problems with generating random numbers in PHP? > > I'm using php 4.0.1pl2 on RH 6.2. > > I installed the banner script phpAds - which works fine, with one > exception: random banner selection seems not to be very "random". > Instead of each banner having the same probability, and thus - periodity > of display, some banners get displayed very often, whereas others don't > get displayed at all! > > All banners belong to the same group - so they really SHOULD get displayed > equally often! I suspect some major random number generator bug - if I > change the banners database (change order, delete and put back again > etc.) - different banners "dominate' while some other banners get > 'discriminated'. > > ...or have done something wrong with the phpAds itself? > Any clues? > > Jacek Juda > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >