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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2010 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class random_Core {
/**
* Return a random 32 bit hash value.
* @param string extra entropy data
*/
static function hash($entropy="") {
return md5($entropy . uniqid(mt_rand(), true));
}
/**
* Return a random hexadecimal string of the given length.
* @param int the desired length of the string
*/
static function string($length) {
return substr(random::hash(), 0, $length);
}
/**
* Return a random floating point number between 0 and 1
*/
static function percent() {
return ((float)mt_rand()) / (float)mt_getrandmax();
}
/**
* Return a random number between 0 and mt_getrandmax()
*/
static function int() {
return mt_rand();
}
}
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