305 lines
7.4 KiB
PHP
305 lines
7.4 KiB
PHP
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<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* CodeIgniter String Helpers
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*
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* @package CodeIgniter
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* @subpackage Helpers
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* @category Helpers
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* @author EllisLab Dev Team
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* @link https://codeigniter.com/user_guide/helpers/string_helper.html
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*/
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// ------------------------------------------------------------------------
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if ( ! function_exists('trim_slashes'))
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{
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/**
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* Trim Slashes
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*
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* Removes any leading/trailing slashes from a string:
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*
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* /this/that/theother/
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*
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* becomes:
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*
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* this/that/theother
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*
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* @todo Remove in version 3.1+.
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* @deprecated 3.0.0 This is just an alias for PHP's native trim()
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*
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* @param string
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* @return string
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*/
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function trim_slashes($str)
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{
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return trim($str, '/');
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('strip_slashes'))
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{
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/**
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* Strip Slashes
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*
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* Removes slashes contained in a string or in an array
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*
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* @param mixed string or array
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* @return mixed string or array
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*/
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function strip_slashes($str)
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{
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if ( ! is_array($str))
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{
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return stripslashes($str);
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}
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foreach ($str as $key => $val)
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{
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$str[$key] = strip_slashes($val);
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}
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return $str;
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('strip_quotes'))
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{
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/**
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* Strip Quotes
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*
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* Removes single and double quotes from a string
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*
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* @param string
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* @return string
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*/
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function strip_quotes($str)
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{
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return str_replace(array('"', "'"), '', $str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('quotes_to_entities'))
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{
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/**
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* Quotes to Entities
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*
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* Converts single and double quotes to entities
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*
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* @param string
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* @return string
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*/
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function quotes_to_entities($str)
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{
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return str_replace(array("\'","\"","'",'"'), array("'",""","'","""), $str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('reduce_double_slashes'))
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{
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/**
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* Reduce Double Slashes
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*
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* Converts double slashes in a string to a single slash,
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* except those found in http://
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*
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* http://www.some-site.com//index.php
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*
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* becomes:
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*
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* http://www.some-site.com/index.php
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*
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* @param string
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* @return string
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*/
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function reduce_double_slashes($str)
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{
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return preg_replace('#(^|[^:])//+#', '\\1/', $str);
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('reduce_multiples'))
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{
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/**
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* Reduce Multiples
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*
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* Reduces multiple instances of a particular character. Example:
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*
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* Fred, Bill,, Joe, Jimmy
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*
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* becomes:
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*
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* Fred, Bill, Joe, Jimmy
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*
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* @param string
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* @param string the character you wish to reduce
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* @param bool TRUE/FALSE - whether to trim the character from the beginning/end
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* @return string
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*/
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function reduce_multiples($str, $character = ',', $trim = FALSE)
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{
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$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
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return ($trim === TRUE) ? trim($str, $character) : $str;
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('random_string'))
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{
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/**
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* Create a "Random" String
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*
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* @param string type of random string. basic, alpha, alnum, numeric, nozero, unique, md5, encrypt and sha1
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* @param int number of characters
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* @return string
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*/
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function random_string($type = 'alnum', $len = 8)
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{
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switch ($type)
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{
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case 'basic':
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return mt_rand();
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case 'alnum':
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case 'numeric':
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case 'nozero':
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case 'alpha':
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switch ($type)
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{
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case 'alpha':
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$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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break;
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case 'alnum':
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$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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break;
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case 'numeric':
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$pool = '0123456789';
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break;
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case 'nozero':
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$pool = '123456789';
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break;
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}
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return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
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case 'unique': // todo: remove in 3.1+
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case 'md5':
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return md5(uniqid(mt_rand()));
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case 'encrypt': // todo: remove in 3.1+
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case 'sha1':
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return sha1(uniqid(mt_rand(), TRUE));
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}
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('increment_string'))
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{
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/**
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* Add's _1 to a string or increment the ending number to allow _2, _3, etc
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*
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* @param string required
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* @param string What should the duplicate number be appended with
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* @param string Which number should be used for the first dupe increment
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* @return string
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*/
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function increment_string($str, $separator = '_', $first = 1)
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{
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preg_match('/(.+)'.preg_quote($separator, '/').'([0-9]+)$/', $str, $match);
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return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('alternator'))
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{
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/**
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* Alternator
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*
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* Allows strings to be alternated. See docs...
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*
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* @param string (as many parameters as needed)
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* @return string
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*/
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function alternator()
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{
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static $i;
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if (func_num_args() === 0)
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{
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$i = 0;
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return '';
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}
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$args = func_get_args();
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return $args[($i++ % count($args))];
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}
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('repeater'))
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{
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/**
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* Repeater function
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*
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* @todo Remove in version 3.1+.
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* @deprecated 3.0.0 This is just an alias for PHP's native str_repeat()
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*
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* @param string $data String to repeat
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* @param int $num Number of repeats
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* @return string
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*/
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function repeater($data, $num = 1)
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{
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return ($num > 0) ? str_repeat($data, $num) : '';
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}
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}
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