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1<?php
2declare(strict_types=1);
3/**
4 * Pop PHP Framework (https://www.popphp.org/)
5 *
6 * @link       https://github.com/popphp/popphp-framework
7 * @author     Nick Sagona, III <nick@popphp.org>
8 * @copyright  Copyright (c) 2009-2026 Nick Sagona, III
9 * @license    https://www.popphp.org/license     New BSD License
10 */
11
12/**
13 * @namespace
14 */
15namespace Pop\Http;
16
17use Pop\Filter\FilterableTrait;
18
19/**
20 * HTTP filterable trait
21 *
22 * @category   Pop
23 * @package    Pop\Http
24 * @author     Nick Sagona, III <nick@popphp.org>
25 * @copyright  Copyright (c) 2009-2026 Nick Sagona, III
26 * @license    https://www.popphp.org/license     New BSD License
27 * @version    6.0.0
28 */
29trait HttpFilterableTrait
30{
31
32    use FilterableTrait;
33
34    /**
35     * Cached parse of ini's disable_functions list - a static php.ini setting that cannot
36     * change during a request, so re-parsing it on every filter() call is pure waste
37     * @var ?array
38     */
39    protected static ?array $disabledFunctions = null;
40
41    /**
42     * Filter values
43     *
44     * @param  mixed $values
45     * @return mixed
46     */
47    public function filter(mixed $values): mixed
48    {
49        if (self::$disabledFunctions === null) {
50            self::$disabledFunctions = array_filter(array_map('trim', explode(',', (string)ini_get('disable_functions'))));
51        }
52        $disabledFunctions = self::$disabledFunctions;
53
54        foreach ($this->filters as $filter) {
55            if (is_array($values)) {
56                foreach ($values as $key => $value) {
57                    if (!in_array($value, $disabledFunctions)) {
58                        $values[$key] = $filter->filter($value, $key);
59                    }
60                }
61            } else {
62                if (!in_array($values, $disabledFunctions)) {
63                    $values = $filter->filter($values);
64                }
65            }
66        }
67
68        return $values;
69    }
70
71}