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- 28.08.2024
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FileBag.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\HttpFoundation;
013
014 use Symfony\Component\HttpFoundation\File\UploadedFile;
015
016 /**
017 * FileBag is a container for uploaded files.
018 *
019 * @author Fabien Potencier <fabien@symfony.com>
020 * @author Bulat Shakirzyanov <mallluhuct@gmail.com>
021 */
022 class FileBag extends ParameterBag
023 {
024 private static $fileKeys = ['error', 'name', 'size', 'tmp_name', 'type'];
025
026 /**
027 * @param array $parameters An array of HTTP files
028 */
029 public function __construct(array $parameters = [])
030 {
031 $this->replace($parameters);
032 }
033
034 /**
035 * {@inheritdoc}
036 */
037 public function replace(array $files = [])
038 {
039 $this->parameters = [];
040 $this->add($files);
041 }
042
043 /**
044 * {@inheritdoc}
045 */
046 public function set($key, $value)
047 {
048 if (!\is_array($value) && !$value instanceof UploadedFile) {
049 throw new \InvalidArgumentException('An uploaded file must be an array or an instance of UploadedFile.');
050 }
051
052 parent::set($key, $this->convertFileInformation($value));
053 }
054
055 /**
056 * {@inheritdoc}
057 */
058 public function add(array $files = [])
059 {
060 foreach ($files as $key => $file) {
061 $this->set($key, $file);
062 }
063 }
064
065 /**
066 * Converts uploaded files to UploadedFile instances.
067 *
068 * @param array|UploadedFile $file A (multi-dimensional) array of uploaded file information
069 *
070 * @return UploadedFile[]|UploadedFile|null A (multi-dimensional) array of UploadedFile instances
071 */
072 protected function convertFileInformation($file)
073 {
074 if ($file instanceof UploadedFile) {
075 return $file;
076 }
077
078 if (\is_array($file)) {
079 $file = $this->fixPhpFilesArray($file);
080 $keys = array_keys($file);
081 sort($keys);
082
083 if ($keys == self::$fileKeys) {
084 if (\UPLOAD_ERR_NO_FILE == $file['error']) {
085 $file = null;
086 } else {
087 $file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['size'], $file['error']);
088 }
089 } else {
090 $file = array_map([$this, 'convertFileInformation'], $file);
091 if (array_keys($keys) === $keys) {
092 $file = array_filter($file);
093 }
094 }
095 }
096
097 return $file;
098 }
099
100 /**
101 * Fixes a malformed PHP $_FILES array.
102 *
103 * PHP has a bug that the format of the $_FILES array differs, depending on
104 * whether the uploaded file fields had normal field names or array-like
105 * field names ("normal" vs. "parent[child]").
106 *
107 * This method fixes the array to look like the "normal" $_FILES array.
108 *
109 * It's safe to pass an already converted array, in which case this method
110 * just returns the original array unmodified.
111 *
112 * @param array $data
113 *
114 * @return array
115 */
116 protected function fixPhpFilesArray($data)
117 {
118 $keys = array_keys($data);
119 sort($keys);
120
121 if (self::$fileKeys != $keys || !isset($data['name']) || !\is_array($data['name'])) {
122 return $data;
123 }
124
125 $files = $data;
126 foreach (self::$fileKeys as $k) {
127 unset($files[$k]);
128 }
129
130 foreach ($data['name'] as $key => $name) {
131 $files[$key] = $this->fixPhpFilesArray([
132 'error' => $data['error'][$key],
133 'name' => $name,
134 'type' => $data['type'][$key],
135 'tmp_name' => $data['tmp_name'][$key],
136 'size' => $data['size'][$key],
137 ]);
138 }
139
140 return $files;
141 }
142 }
143