134 行
3.6 KiB
PHP
134 行
3.6 KiB
PHP
<?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 3.0.0
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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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* PHP ext/standard compatibility package
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*
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* @package CodeIgniter
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* @subpackage CodeIgniter
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* @category Compatibility
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* @author Andrey Andreev
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* @link https://codeigniter.com/userguide3/
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*/
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// ------------------------------------------------------------------------
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if (is_php('5.5'))
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{
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return;
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}
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// ------------------------------------------------------------------------
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if ( ! function_exists('array_column'))
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{
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/**
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* array_column()
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*
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* @link https://secure.php.net/array_column
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* @param array $array
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* @param mixed $column_key
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* @param mixed $index_key
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* @return array
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*/
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function array_column(array $array, $column_key, $index_key = NULL)
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{
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if ( ! in_array($type = gettype($column_key), array('integer', 'string', 'NULL'), TRUE))
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{
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if ($type === 'double')
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{
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$column_key = (int) $column_key;
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}
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elseif ($type === 'object' && method_exists($column_key, '__toString'))
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{
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$column_key = (string) $column_key;
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}
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else
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{
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trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
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return FALSE;
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}
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}
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if ( ! in_array($type = gettype($index_key), array('integer', 'string', 'NULL'), TRUE))
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{
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if ($type === 'double')
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{
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$index_key = (int) $index_key;
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}
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elseif ($type === 'object' && method_exists($index_key, '__toString'))
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{
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$index_key = (string) $index_key;
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}
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else
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{
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trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
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return FALSE;
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}
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}
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$result = array();
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foreach ($array as &$a)
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{
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if ($column_key === NULL)
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{
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$value = $a;
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}
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elseif (is_array($a) && array_key_exists($column_key, $a))
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{
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$value = $a[$column_key];
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}
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else
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{
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continue;
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}
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if ($index_key === NULL OR ! array_key_exists($index_key, $a))
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{
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$result[] = $value;
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}
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else
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{
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$result[$a[$index_key]] = $value;
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}
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}
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return $result;
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}
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}
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