<?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
*/
use Config\Services;
/**
* CodeIgniter Security Helpers
*
* @package CodeIgniter
*/
if (! function_exists('sanitize_filename'))
{
/**
* Sanitize a filename to use in a URI.
*
* @param string $filename
*
* @return string
*/
function sanitize_filename(string $filename): string
{
return Services::security()->sanitizeFilename($filename);
}
}
//--------------------------------------------------------------------
if (! function_exists('strip_image_tags'))
{
/**
* Strip Image Tags
*
* @param string $str
* @return string
*/
function strip_image_tags(string $str): string
{
return preg_replace([
'#<img[\s/]+.*?src\s*=\s*(["\'])([^\\1]+?)\\1.*?\>#i',
'#<img[\s/]+.*?src\s*=\s*?(([^\s"\'=<>`]+)).*?\>#i',
], '\\2', $str
);
}
}
//--------------------------------------------------------------------
if (! function_exists('encode_php_tags'))
{
/**
* Convert PHP tags to entities
*
* @param string $str
* @return string
*/
function encode_php_tags(string $str): string
{
return str_replace(['<?', '?>'], ['<?', '?>'], $str);
}
}
//--------------------------------------------------------------------
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