random number generator

[sheerin]

Im doing an examination question bank. I would like the bank/system to randomly
pick questions for the exam paper. Anyone that has knowledge with random number generation, please help me out. Thanx

[blueday54555]

this generates a random number between 0 an 1000

<?
$test = rand(0,1000);
echo $test;
?>

[bigBA]

well, that would return the same number sequence every time.

so use srand() before.


srand(uniqueid(time()));
... rand()
(or something like that)

[blueday54555]

the usage of srand is e.g.

srand ((double)microtime()*1000000);

the time is a comon used value for this issues

[bigBA]

yeah.. sorry. mixed that up with session handling... :) :thumb:

[First Base]

here's a code that randomly generates 12 numbers:

<?php
$num1=rand(1111,9999);
$num2=rand(1111,9999);
$num3=rand(1111,9999);
echo"$num1$num2$num3";
?>

-firstbase