php3-list | 199901

Re: [PHP3] strange problem with rand() From: Luke Welling (luke.welling <email protected>)
Date: 01/31/99

>I am using PHP on FreeBSD (i am a Pair networks client)
>and i have a strange problem, look at this:
>
>$images = array("batman","indian","mermaid");
>/* images array made shorter, doesn't seem to make a difference to me */
>$count = count($images);
>srand((double)microtime()*1000000); //seeding the random generator
>$i=rand(0,$count); //picking a value between 0 and the length of $images

This code works fine on a machine that I use with Free BSD and PHP v3.05.

If you read the change log, you will see that rand() was improved for some
machines in PHP 3.06. You might like to see if upgrading solves your
problem.

Your code has one problem though, you are getting a random index between 0
and $count. You want one between 0 and $count-1

Cheers,

Luke 

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