Description:
------------
---
From manual page: http://www.php.net/migration53.incompatible
---
It looks like in PHP 5.2 mt_rand($a, $b) returned the value from the range between $a and $b. There was no the requirement that $b must be greater than $a (checked on PHP 5.2.17).

In PHP 5.3.8 the warning is triggered and boolean false is returned if second parameter is less than the first.

[19-Dec-2011 11:26:47] PHP Warning:  mt_rand(): max(2) is smaller than min(5) in /mnt/hgfs/data/ciao-php/ciao/test.php on line 6

I haven't noticed this incompatibility in the backward incompatible changes list.

Test script:
---------------
<?php

for ($i = 0; $i < 5; $i++) {
    var_dump(mt_rand(160, 0)); 
    echo "\n";
}