<?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 3.0.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* PHP ext/standard compatibility package
*
* @package CodeIgniter
* @subpackage CodeIgniter
* @category Compatibility
* @author Andrey Andreev
* @link https://codeigniter.com/user_guide/
*/
// ------------------------------------------------------------------------
if (is_php('5.5'))
{
return;
}
// ------------------------------------------------------------------------
if ( ! function_exists('array_column'))
{
/**
* array_column()
*
* @link http://php.net/array_column
* @param array $array
* @param mixed $column_key
* @param mixed $index_key
* @return array
*/
function array_column(array $array, $column_key, $index_key = NULL)
{
if ( ! in_array($type = gettype($column_key), array('integer', 'string', 'NULL'), TRUE))
{
if ($type === 'double')
{
$column_key = (int) $column_key;
}
elseif ($type === 'object' && method_exists($column_key, '__toString'))
{
$column_key = (string) $column_key;
}
else
{
trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
return FALSE;
}
}
if ( ! in_array($type = gettype($index_key), array('integer', 'string', 'NULL'), TRUE))
{
if ($type === 'double')
{
$index_key = (int) $index_key;
}
elseif ($type === 'object' && method_exists($index_key, '__toString'))
{
$index_key = (string) $index_key;
}
else
{
trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
return FALSE;
}
}
$result = array();
foreach ($array as &$a)
{
if ($column_key === NULL)
{
$value = $a;
}
elseif (is_array($a) && array_key_exists($column_key, $a))
{
$value = $a[$column_key];
}
else
{
continue;
}
if ($index_key === NULL OR ! array_key_exists($index_key, $a))
{
$result[] = $value;
}
else
{
$result[$a[$index_key]] = $value;
}
}
return $result;
}
}
// ------------------------------------------------------------------------
if (is_php('5.4'))
{
return;
}
// ------------------------------------------------------------------------
if ( ! function_exists('hex2bin'))
{
/**
* hex2bin()
*
* @link http://php.net/hex2bin
* @param string $data
* @return string
*/
function hex2bin($data)
{
if (in_array($type = gettype($data), array('array', 'double', 'object'), TRUE))
{
if ($type === 'object' && method_exists($data, '__toString'))
{
$data = (string) $data;
}
else
{
trigger_error('hex2bin() expects parameter 1 to be string, '.$type.' given', E_USER_WARNING);
return NULL;
}
}
if (strlen($data) % 2 !== 0)
{
trigger_error('Hexadecimal input string must have an even length', E_USER_WARNING);
return FALSE;
}
elseif ( ! preg_match('/^[0-9a-f]*$/i', $data))
{
trigger_error('Input string must be hexadecimal string', E_USER_WARNING);
return FALSE;
}
return pack('H*', $data);
}
}
// ------------------------------------------------------------------------
if (is_php('5.3'))
{
return;
}
// ------------------------------------------------------------------------
if ( ! function_exists('array_replace'))
{
/**
* array_replace()
*
* @link http://php.net/array_replace
* @return array
*/
function array_replace()
{
$arrays = func_get_args();
if (($c = count($arrays)) === 0)
{
trigger_error('array_replace() expects at least 1 parameter, 0 given', E_USER_WARNING);
return NULL;
}
elseif ($c === 1)
{
if ( ! is_array($arrays[0]))
{
trigger_error('array_replace(): Argument #1 is not an array', E_USER_WARNING);
return NULL;
}
return $arrays[0];
}
$array = array_shift($arrays);
$c--;
for ($i = 0; $i < $c; $i++)
{
if ( ! is_array($arrays[$i]))
{
trigger_error('array_replace(): Argument #'.($i + 2).' is not an array', E_USER_WARNING);
return NULL;
}
elseif (empty($arrays[$i]))
{
continue;
}
foreach (array_keys($arrays[$i]) as $key)
{
$array[$key] = $arrays[$i][$key];
}
}
return $array;
}
}
// ------------------------------------------------------------------------
if ( ! function_exists('array_replace_recursive'))
{
/**
* array_replace_recursive()
*
* @link http://php.net/array_replace_recursive
* @return array
*/
function array_replace_recursive()
{
$arrays = func_get_args();
if (($c = count($arrays)) === 0)
{
trigger_error('array_replace_recursive() expects at least 1 parameter, 0 given', E_USER_WARNING);
return NULL;
}
elseif ($c === 1)
{
if ( ! is_array($arrays[0]))
{
trigger_error('array_replace_recursive(): Argument #1 is not an array', E_USER_WARNING);
return NULL;
}
return $arrays[0];
}
$array = array_shift($arrays);
$c--;
for ($i = 0; $i < $c; $i++)
{
if ( ! is_array($arrays[$i]))
{
trigger_error('array_replace_recursive(): Argument #'.($i + 2).' is not an array', E_USER_WARNING);
return NULL;
}
elseif (empty($arrays[$i]))
{
continue;
}
foreach (array_keys($arrays[$i]) as $key)
{
$array[$key] = (is_array($arrays[$i][$key]) && isset($array[$key]) && is_array($array[$key]))
? array_replace_recursive($array[$key], $arrays[$i][$key])
: $arrays[$i][$key];
}
}
return $array;
}
}
// ------------------------------------------------------------------------
if ( ! function_exists('quoted_printable_encode'))
{
/**
* quoted_printable_encode()
*
* @link http://php.net/quoted_printable_encode
* @param string $str
* @return string
*/
function quoted_printable_encode($str)
{
if (strlen($str) === 0)
{
return '';
}
elseif (in_array($type = gettype($str), array('array', 'object'), TRUE))
{
if ($type === 'object' && method_exists($str, '__toString'))
{
$str = (string) $str;
}
else
{
trigger_error('quoted_printable_encode() expects parameter 1 to be string, '.$type.' given', E_USER_WARNING);
return NULL;
}
}
if (function_exists('imap_8bit'))
{
return imap_8bit($str);
}
$i = $lp = 0;
$output = '';
$hex = '0123456789ABCDEF';
$length = (extension_loaded('mbstring') && ini_get('mbstring.func_overload'))
? mb_strlen($str, '8bit')
: strlen($str);
while ($length--)
{
if ((($c = $str[$i++]) === "\015") && isset($str[$i]) && ($str[$i] === "\012") && $length > 0)
{
$output .= "\015".$str[$i++];
$length--;
$lp = 0;
continue;
}
if (
ctype_cntrl($c)
OR (ord($c) === 0x7f)
OR (ord($c) & 0x80)
OR ($c === '=')
OR ($c === ' ' && isset($str[$i]) && $str[$i] === "\015")
)
{
if (
(($lp += 3) > 75 && ord($c) <= 0x7f)
OR (ord($c) > 0x7f && ord($c) <= 0xdf && ($lp + 3) > 75)
OR (ord($c) > 0xdf && ord($c) <= 0xef && ($lp + 6) > 75)
OR (ord($c) > 0xef && ord($c) <= 0xf4 && ($lp + 9) > 75)
)
{
$output .= "=\015\012";
$lp = 3;
}
$output .= '='.$hex[ord($c) >> 4].$hex[ord($c) & 0xf];
continue;
}
if ((++$lp) > 75)
{
$output .= "=\015\012";
$lp = 1;
}
$output .= $c;
}
return $output;
}
}
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