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cd48b89f31
random::hash() random::string() random::percent() random::int() So that we don't have lots of different ways to get random values all over the code. Follow-on to #1527.
50 lines
1.6 KiB
PHP
50 lines
1.6 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2010 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class random_Core {
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/**
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* Return a random 32 bit hash value.
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* @param string extra entropy data
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*/
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static function hash($entropy="") {
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return md5($entropy . uniqid(mt_rand(), true));
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}
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/**
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* Return a random hexadecimal string of the given length.
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* @param int the desired length of the string
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*/
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static function string($length) {
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return substr(random::hash(), 0, $length);
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}
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/**
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* Return a random floating point number between 0 and 1
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*/
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static function percent() {
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return ((float)mt_rand()) / (float)mt_getrandmax();
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}
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/**
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* Return a random number between 0 and mt_getrandmax()
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*/
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static function int() {
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return mt_rand();
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}
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} |