Description:
------------
The function Rand will produce predictable results.

Reproduce code:
---------------
<?php

$array_random = array_fill(1,10,1);

for($i=0;$i<100000000;$i++) {

$array_random[rand(1,10)]++;

}

print_r($array_random);

?>

Expected result:
----------------
This should produce an array which counts how many times each number is picked at random.  It should return a different result each time.

Actual result:
--------------
Instead of getting purely random responses, we get predictable ones, in this example there will be tainted results, with numbers 5 and 10 producing lower counts:

Array
(
    [1] => 10000594
    [2] => 10000610
    [3] => 10000633
    [4] => 10000589
    [5] => 9997562
    [6] => 10000606
    [7] => 10000568
    [8] => 10000620
    [9] => 10000645
    [10] => 9997583
)

You will always see these types of return values.