116 lines
3.4 KiB
PHP
116 lines
3.4 KiB
PHP
<?php
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP
|
|
*
|
|
* This content is released under the MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014 - 2016, 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 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
|
|
* @license http://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 Array Helpers
|
|
*
|
|
* @package CodeIgniter
|
|
* @subpackage Helpers
|
|
* @category Helpers
|
|
* @author EllisLab Dev Team
|
|
* @link https://codeigniter.com/user_guide/helpers/array_helper.html
|
|
*/
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('element'))
|
|
{
|
|
/**
|
|
* Element
|
|
*
|
|
* Lets you determine whether an array index is set and whether it has a value.
|
|
* If the element is empty it returns NULL (or whatever you specify as the default value.)
|
|
*
|
|
* @param string
|
|
* @param array
|
|
* @param mixed
|
|
* @return mixed depends on what the array contains
|
|
*/
|
|
function element($item, array $array, $default = NULL)
|
|
{
|
|
return array_key_exists($item, $array) ? $array[$item] : $default;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('random_element'))
|
|
{
|
|
/**
|
|
* Random Element - Takes an array as input and returns a random element
|
|
*
|
|
* @param array
|
|
* @return mixed depends on what the array contains
|
|
*/
|
|
function random_element($array)
|
|
{
|
|
return is_array($array) ? $array[array_rand($array)] : $array;
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
if ( ! function_exists('elements'))
|
|
{
|
|
/**
|
|
* Elements
|
|
*
|
|
* Returns only the array items specified. Will return a default value if
|
|
* it is not set.
|
|
*
|
|
* @param array
|
|
* @param array
|
|
* @param mixed
|
|
* @return mixed depends on what the array contains
|
|
*/
|
|
function elements($items, array $array, $default = NULL)
|
|
{
|
|
$return = array();
|
|
|
|
is_array($items) OR $items = array($items);
|
|
|
|
foreach ($items as $item)
|
|
{
|
|
$return[$item] = array_key_exists($item, $array) ? $array[$item] : $default;
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
}
|