305 lines
7.4 KiB
PHP
305 lines
7.4 KiB
PHP
<?php
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP
|
|
*
|
|
* This content is released under the MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
|
|
*
|
|
* 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.
|
|
*
|
|
* @package CodeIgniter
|
|
* @author EllisLab Dev Team
|
|
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
|
|
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
|
|
* @license https://opensource.org/licenses/MIT MIT License
|
|
* @link https://codeigniter.com
|
|
* @since Version 1.0.0
|
|
* @filesource
|
|
*/
|
|
defined('BASEPATH') OR exit('No direct script access allowed');
|
|
|
|
/**
|
|
* CodeIgniter String Helpers
|
|
*
|
|
* @package CodeIgniter
|
|
* @subpackage Helpers
|
|
* @category Helpers
|
|
* @author EllisLab Dev Team
|
|
* @link https://codeigniter.com/user_guide/helpers/string_helper.html
|
|
*/
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('trim_slashes'))
|
|
{
|
|
/**
|
|
* Trim Slashes
|
|
*
|
|
* Removes any leading/trailing slashes from a string:
|
|
*
|
|
* /this/that/theother/
|
|
*
|
|
* becomes:
|
|
*
|
|
* this/that/theother
|
|
*
|
|
* @todo Remove in version 3.1+.
|
|
* @deprecated 3.0.0 This is just an alias for PHP's native trim()
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
function trim_slashes($str)
|
|
{
|
|
return trim($str, '/');
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('strip_slashes'))
|
|
{
|
|
/**
|
|
* Strip Slashes
|
|
*
|
|
* Removes slashes contained in a string or in an array
|
|
*
|
|
* @param mixed string or array
|
|
* @return mixed string or array
|
|
*/
|
|
function strip_slashes($str)
|
|
{
|
|
if ( ! is_array($str))
|
|
{
|
|
return stripslashes($str);
|
|
}
|
|
|
|
foreach ($str as $key => $val)
|
|
{
|
|
$str[$key] = strip_slashes($val);
|
|
}
|
|
|
|
return $str;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('strip_quotes'))
|
|
{
|
|
/**
|
|
* Strip Quotes
|
|
*
|
|
* Removes single and double quotes from a string
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
function strip_quotes($str)
|
|
{
|
|
return str_replace(array('"', "'"), '', $str);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('quotes_to_entities'))
|
|
{
|
|
/**
|
|
* Quotes to Entities
|
|
*
|
|
* Converts single and double quotes to entities
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
function quotes_to_entities($str)
|
|
{
|
|
return str_replace(array("\'","\"","'",'"'), array("'",""","'","""), $str);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('reduce_double_slashes'))
|
|
{
|
|
/**
|
|
* Reduce Double Slashes
|
|
*
|
|
* Converts double slashes in a string to a single slash,
|
|
* except those found in http://
|
|
*
|
|
* http://www.some-site.com//index.php
|
|
*
|
|
* becomes:
|
|
*
|
|
* http://www.some-site.com/index.php
|
|
*
|
|
* @param string
|
|
* @return string
|
|
*/
|
|
function reduce_double_slashes($str)
|
|
{
|
|
return preg_replace('#(^|[^:])//+#', '\\1/', $str);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('reduce_multiples'))
|
|
{
|
|
/**
|
|
* Reduce Multiples
|
|
*
|
|
* Reduces multiple instances of a particular character. Example:
|
|
*
|
|
* Fred, Bill,, Joe, Jimmy
|
|
*
|
|
* becomes:
|
|
*
|
|
* Fred, Bill, Joe, Jimmy
|
|
*
|
|
* @param string
|
|
* @param string the character you wish to reduce
|
|
* @param bool TRUE/FALSE - whether to trim the character from the beginning/end
|
|
* @return string
|
|
*/
|
|
function reduce_multiples($str, $character = ',', $trim = FALSE)
|
|
{
|
|
$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
|
|
return ($trim === TRUE) ? trim($str, $character) : $str;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('random_string'))
|
|
{
|
|
/**
|
|
* Create a "Random" String
|
|
*
|
|
* @param string type of random string. basic, alpha, alnum, numeric, nozero, unique, md5, encrypt and sha1
|
|
* @param int number of characters
|
|
* @return string
|
|
*/
|
|
function random_string($type = 'alnum', $len = 8)
|
|
{
|
|
switch ($type)
|
|
{
|
|
case 'basic':
|
|
return mt_rand();
|
|
case 'alnum':
|
|
case 'numeric':
|
|
case 'nozero':
|
|
case 'alpha':
|
|
switch ($type)
|
|
{
|
|
case 'alpha':
|
|
$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
|
|
break;
|
|
case 'alnum':
|
|
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
|
|
break;
|
|
case 'numeric':
|
|
$pool = '0123456789';
|
|
break;
|
|
case 'nozero':
|
|
$pool = '123456789';
|
|
break;
|
|
}
|
|
return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
|
|
case 'unique': // todo: remove in 3.1+
|
|
case 'md5':
|
|
return md5(uniqid(mt_rand()));
|
|
case 'encrypt': // todo: remove in 3.1+
|
|
case 'sha1':
|
|
return sha1(uniqid(mt_rand(), TRUE));
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('increment_string'))
|
|
{
|
|
/**
|
|
* Add's _1 to a string or increment the ending number to allow _2, _3, etc
|
|
*
|
|
* @param string required
|
|
* @param string What should the duplicate number be appended with
|
|
* @param string Which number should be used for the first dupe increment
|
|
* @return string
|
|
*/
|
|
function increment_string($str, $separator = '_', $first = 1)
|
|
{
|
|
preg_match('/(.+)'.preg_quote($separator, '/').'([0-9]+)$/', $str, $match);
|
|
return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('alternator'))
|
|
{
|
|
/**
|
|
* Alternator
|
|
*
|
|
* Allows strings to be alternated. See docs...
|
|
*
|
|
* @param string (as many parameters as needed)
|
|
* @return string
|
|
*/
|
|
function alternator()
|
|
{
|
|
static $i;
|
|
|
|
if (func_num_args() === 0)
|
|
{
|
|
$i = 0;
|
|
return '';
|
|
}
|
|
|
|
$args = func_get_args();
|
|
return $args[($i++ % count($args))];
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('repeater'))
|
|
{
|
|
/**
|
|
* Repeater function
|
|
*
|
|
* @todo Remove in version 3.1+.
|
|
* @deprecated 3.0.0 This is just an alias for PHP's native str_repeat()
|
|
*
|
|
* @param string $data String to repeat
|
|
* @param int $num Number of repeats
|
|
* @return string
|
|
*/
|
|
function repeater($data, $num = 1)
|
|
{
|
|
return ($num > 0) ? str_repeat($data, $num) : '';
|
|
}
|
|
}
|