ci4

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<?php
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declare(strict_types=1);
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/**
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 * This file is part of CodeIgniter 4 framework.
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 *
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 * (c) CodeIgniter Foundation <admin@codeigniter.com>
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 *
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 * For the full copyright and license information, please view
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 * the LICENSE file that was distributed with this source code.
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 */
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// CodeIgniter XML Helpers
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if (! function_exists('xml_convert')) {
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    /**
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     * Convert Reserved XML characters to Entities
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     */
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    function xml_convert(string $str, bool $protectAll = false): string
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    {
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        $temp = '__TEMP_AMPERSANDS__';
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        // Replace entities to temporary markers so that
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        // ampersands won't get messed up
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        $str = preg_replace('/&#(\d+);/', $temp . '\\1;', $str);
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        if ($protectAll === true) {
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            $str = preg_replace('/&(\w+);/', $temp . '\\1;', $str);
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        }
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        $original = [
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            '&',
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            '<',
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            '>',
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            '"',
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            "'",
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            '-',
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        ];
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        $replacement = [
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            '&amp;',
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            '&lt;',
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            '&gt;',
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            '&quot;',
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            '&apos;',
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            '&#45;',
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        ];
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        $str = str_replace($original, $replacement, $str);
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        // Decode the temp markers back to entities
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        $str = preg_replace('/' . $temp . '(\d+);/', '&#\\1;', $str);
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        if ($protectAll === true) {
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            return preg_replace('/' . $temp . '(\w+);/', '&\\1;', $str);
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        }
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        return $str;
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    }
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}
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