<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014-2019 British Columbia Institute of Technology
* Copyright (c) 2019-2020 CodeIgniter Foundation
*
* 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 CodeIgniter Dev Team
* @copyright 2019-2020 CodeIgniter Foundation
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 4.0.0
* @filesource
*/
/**
* CodeIgniter Array Helpers
*
* @package CodeIgniter
*/
if (! function_exists('dot_array_search'))
{
/**
* Searches an array through dot syntax. Supports
* wildcard searches, like foo.*.bar
*
* @param string $index
* @param array $array
*
* @return mixed|null
*/
function dot_array_search(string $index, array $array)
{
$segments = explode('.', rtrim(rtrim($index, '* '), '.'));
return _array_search_dot($segments, $array);
}
}
if (! function_exists('_array_search_dot'))
{
/**
* Used by dot_array_search to recursively search the
* array with wildcards.
*
* @param array $indexes
* @param array $array
*
* @return mixed|null
*/
function _array_search_dot(array $indexes, array $array)
{
// Grab the current index
$currentIndex = $indexes
? array_shift($indexes)
: null;
if ((empty($currentIndex) && intval($currentIndex) !== 0) || (! isset($array[$currentIndex]) && $currentIndex !== '*'))
{
return null;
}
// Handle Wildcard (*)
if ($currentIndex === '*')
{
// If $array has more than 1 item, we have to loop over each.
if (is_array($array))
{
foreach ($array as $value)
{
$answer = _array_search_dot($indexes, $value);
if ($answer !== null)
{
return $answer;
}
}
// Still here after searching all child nodes?
return null;
}
}
// If this is the last index, make sure to return it now,
// and not try to recurse through things.
if (empty($indexes))
{
return $array[$currentIndex];
}
// Do we need to recursively search this value?
if (is_array($array[$currentIndex]) && $array[$currentIndex])
{
return _array_search_dot($indexes, $array[$currentIndex]);
}
// Otherwise we've found our match!
return $array[$currentIndex];
}
}
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