Crypt_Random

# Procedural File: Random.php

Source Location: /lib/3rdParty/phpseclib/Crypt/Random.php

## Page Details:

Random Number Generator

PHP versions 4 and 5

Here's a short example of how to use this library:

1. <?php
2. include('Crypt/Random.php');
4. echo crypt_random ();
5. ?>

LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#### Tags:

author: | Jim Wigginton <terrafrost@php.net>
version: | $Id: Random.php,v 1.2 2011/05/19 18:02:11 gruberroland Exp $
copyright: | MMVII Jim Wigginton
link: | http://phpseclib.sourceforge.net
license: | MIT License

### crypt_random [line 60]

`Integer crypt_random( [optional $min = 0], [optional $max = 0x7FFFFFFF])`

Generate a random value.

On 32-bit machines, the largest distance that can exist between $min and $max is 2**31. If $min and $max are farther apart than that then the last ($max - range) numbers.

Depending on how this is being used, it may be worth while to write a replacement. For example, a PHP-based web app that stores its data in an SQL database can collect more entropy than this function can.

#### Tags:

access: | public

#### Parameters

optional | $min | Integer $min
optional | $max | Integer $max

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Documentation generated on Tue, 22 Nov 2011 16:30:04 +0100 by phpDocumentor 1.4.1