<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2017, 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 - 2017, 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; } }