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php-general | 2000071

[PHP] PHP random n. problem? From: Jacek (jacek <email protected>)
Date: 07/14/00

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 

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