<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
use Config\Services;
/**
* CodeIgniter Security Helpers
*/
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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