str_rand()

<?php
/*
***************************************************************************
* Function str_rand(), used to generate a random string of the characters *
* you specify, with a length of your choice.                              *
* Copyright (C) 2004 The Celestial Celebi                                 *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.               *
***************************************************************************
*/

/*
***************************************************************************
* @function: str_rand(): Returns a random string, created from the        *
*  characters you specify.                                                *
* @param $iLength (int): The length of the random string.                 *
* @param $bUseLowercase (bool): Use lowercase characters in the string?   *
* @param $bUseUppercase (bool): Use uppercase characters in the string?   *
* @param $bUseNumbers (bool): Use numbers in the string?                  *
* @return string: The random string of $iLength characters.               *
*-------------------------------------------------------------------------*
* @started on: 23 June 2004 at 20:00:00 by The Celestial Celebi.          *
* @last edited on: 23 June 2004 at 20:01:43 by The Celestial Celebi.      *
* @constructs used: array, if, for, return.                               *
* @functions used: array_merge, count, rand, range.                       *
***************************************************************************
*/

function str_rand($iLength, $bUseLowercase, $bUseUppercase, $bUseNumbers)
{
	if((!$bUseLowercase && !$bUseUppercase && !$bUseNumbers) || $iLength == 0)
	{
		trigger_error('Must use something to generate the string', E_USER_WARNING);
	}
	else
	{
		$aCharactersToChoose = array();
		if($bUseLowercase)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range('a', 'z'));
		}
		if($bUseUppercase)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range('A', 'Z'));
		}
		if($bUsenumbers)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range(0, 9));
		}
		$iNumCharacters = (count($aCharactersToChoose) - 1);
		$sRandomString = '';
		for($i = 0; $i <= $iLength; $i++)
		{
			$sRandomString .= $aCharactersToChoose[rand(0, $iNumCharacters)];
		}
		return $sRandomString;
	}
}
?>

<?php
/*
***************************************************************************
* Function str_rand(), used to generate a random string of the characters *
* you specify, with a length of your choice.                              *
* Copyright (C) 2004 The Celestial Celebi                                 *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.               *
***************************************************************************
*/
 
/*
***************************************************************************
* @function: str_rand(): Returns a random string, created from the        *
*  characters you specify.                                                *
* @param $iLength (int): The length of the random string.                 *
* @param $bUseLowercase (bool): Use lowercase characters in the string?   *
* @param $bUseUppercase (bool): Use uppercase characters in the string?   *
* @param $bUseNumbers (bool): Use numbers in the string?                  *
* @return string: The random string of $iLength characters.               *
*-------------------------------------------------------------------------*
* @started on: 23 June 2004 at 20:00:00 by The Celestial Celebi.          *
* @last edited on: 23 June 2004 at 20:01:43 by The Celestial Celebi.      *
* @constructs used: array, if, for, return.                               *
* @functions used: array_merge, count, rand, range.                       *
***************************************************************************
*/
 
function str_rand($iLength, $bUseLowercase, $bUseUppercase, $bUseNumbers)
{
	if((!$bUseLowercase && !$bUseUppercase && !$bUseNumbers) || $iLength == 0)
	{
		trigger_error('Must use something to generate the string', E_USER_WARNING);
	}
	else
	{
		$aCharactersToChoose = array();
		if($bUseLowercase)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range('a', 'z'));
		}
		if($bUseUppercase)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range('A', 'Z'));
		}
		if($bUsenumbers)
		{
			$aCharactersToChoose = array_merge($aCharactersToChoose, range(0, 9));
		}
		$iNumCharacters = (count($aCharactersToChoose) - 1);
		$sRandomString = '';
		for($i = 0; $i <= $iLength; $i++)
		{
			$sRandomString .= $aCharactersToChoose[rand(0, $iNumCharacters)];
		}
		return $sRandomString;
	}
}
?>