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/system/core/compat/standard.php

https://bitbucket.org/Naked_Yoshi/sq_kanban
PHP | 182 lines | 102 code | 15 blank | 65 comment | 17 complexity | 9266d0eaf9e6c0e5f9ea9d1db2ee8284 MD5 | raw file
  1<?php
  2/**
  3 * CodeIgniter
  4 *
  5 * An open source application development framework for PHP
  6 *
  7 * This content is released under the MIT License (MIT)
  8 *
  9 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
 10 *
 11 * Permission is hereby granted, free of charge, to any person obtaining a copy
 12 * of this software and associated documentation files (the "Software"), to deal
 13 * in the Software without restriction, including without limitation the rights
 14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 15 * copies of the Software, and to permit persons to whom the Software is
 16 * furnished to do so, subject to the following conditions:
 17 *
 18 * The above copyright notice and this permission notice shall be included in
 19 * all copies or substantial portions of the Software.
 20 *
 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 27 * THE SOFTWARE.
 28 *
 29 * @package	CodeIgniter
 30 * @author	EllisLab Dev Team
 31 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 32 * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
 33 * @license	http://opensource.org/licenses/MIT	MIT License
 34 * @link	https://codeigniter.com
 35 * @since	Version 3.0.0
 36 * @filesource
 37 */
 38defined('BASEPATH') OR exit('No direct script access allowed');
 39
 40/**
 41 * PHP ext/standard compatibility package
 42 *
 43 * @package		CodeIgniter
 44 * @subpackage	CodeIgniter
 45 * @category	Compatibility
 46 * @author		Andrey Andreev
 47 * @link		https://codeigniter.com/user_guide/
 48 */
 49
 50// ------------------------------------------------------------------------
 51
 52if (is_php('5.5'))
 53{
 54	return;
 55}
 56
 57// ------------------------------------------------------------------------
 58
 59if ( ! function_exists('array_column'))
 60{
 61	/**
 62	 * array_column()
 63	 *
 64	 * @link	http://php.net/array_column
 65	 * @param	array	$array
 66	 * @param	mixed	$column_key
 67	 * @param	mixed	$index_key
 68	 * @return	array
 69	 */
 70	function array_column(array $array, $column_key, $index_key = NULL)
 71	{
 72		if ( ! in_array($type = gettype($column_key), array('integer', 'string', 'NULL'), TRUE))
 73		{
 74			if ($type === 'double')
 75			{
 76				$column_key = (int) $column_key;
 77			}
 78			elseif ($type === 'object' && method_exists($column_key, '__toString'))
 79			{
 80				$column_key = (string) $column_key;
 81			}
 82			else
 83			{
 84				trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
 85				return FALSE;
 86			}
 87		}
 88
 89		if ( ! in_array($type = gettype($index_key), array('integer', 'string', 'NULL'), TRUE))
 90		{
 91			if ($type === 'double')
 92			{
 93				$index_key = (int) $index_key;
 94			}
 95			elseif ($type === 'object' && method_exists($index_key, '__toString'))
 96			{
 97				$index_key = (string) $index_key;
 98			}
 99			else
100			{
101				trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
102				return FALSE;
103			}
104		}
105
106		$result = array();
107		foreach ($array as &$a)
108		{
109			if ($column_key === NULL)
110			{
111				$value = $a;
112			}
113			elseif (is_array($a) && array_key_exists($column_key, $a))
114			{
115				$value = $a[$column_key];
116			}
117			else
118			{
119				continue;
120			}
121
122			if ($index_key === NULL OR ! array_key_exists($index_key, $a))
123			{
124				$result[] = $value;
125			}
126			else
127			{
128				$result[$a[$index_key]] = $value;
129			}
130		}
131
132		return $result;
133	}
134}
135
136// ------------------------------------------------------------------------
137
138if (is_php('5.4'))
139{
140	return;
141}
142
143// ------------------------------------------------------------------------
144
145if ( ! function_exists('hex2bin'))
146{
147	/**
148	 * hex2bin()
149	 *
150	 * @link	http://php.net/hex2bin
151	 * @param	string	$data
152	 * @return	string
153	 */
154	function hex2bin($data)
155	{
156		if (in_array($type = gettype($data), array('array', 'double', 'object', 'resource'), TRUE))
157		{
158			if ($type === 'object' && method_exists($data, '__toString'))
159			{
160				$data = (string) $data;
161			}
162			else
163			{
164				trigger_error('hex2bin() expects parameter 1 to be string, '.$type.' given', E_USER_WARNING);
165				return NULL;
166			}
167		}
168
169		if (strlen($data) % 2 !== 0)
170		{
171			trigger_error('Hexadecimal input string must have an even length', E_USER_WARNING);
172			return FALSE;
173		}
174		elseif ( ! preg_match('/^[0-9a-f]*$/i', $data))
175		{
176			trigger_error('Input string must be hexadecimal string', E_USER_WARNING);
177			return FALSE;
178		}
179
180		return pack('H*', $data);
181	}
182}