srand — Seeds the random number generator with the
int seed: Seed value
Seeds the random number generator. It's always a good
idea to do this before using the rand() function. Any number
can be used to seed the generator, but as a general rule
the more random the number you start with, the more
random the number you'll get. Usually, using something
like mktime() yields
a suitable number. Another common solution is to combine
process IDs, the time, and the client's IP number to
produce a more random seed.
Example 693. Seed the random
echo "A random number: ", rand();
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
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