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ParameterBag.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 /**
015 * ParameterBag is a container for key/value pairs.
016 *
017 * @author Fabien Potencier <fabien@symfony.com>
018 */
019 class ParameterBag implements \IteratorAggregate, \Countable
020 {
021 /**
022 * Parameter storage.
023 */
024 protected $parameters;
025
026 /**
027 * @param array $parameters An array of parameters
028 */
029 public function __construct(array $parameters = [])
030 {
031 $this->parameters = $parameters;
032 }
033
034 /**
035 * Returns the parameters.
036 *
037 * @return array An array of parameters
038 */
039 public function all()
040 {
041 return $this->parameters;
042 }
043
044 /**
045 * Returns the parameter keys.
046 *
047 * @return array An array of parameter keys
048 */
049 public function keys()
050 {
051 return array_keys($this->parameters);
052 }
053
054 /**
055 * Replaces the current parameters by a new set.
056 *
057 * @param array $parameters An array of parameters
058 */
059 public function replace(array $parameters = [])
060 {
061 $this->parameters = $parameters;
062 }
063
064 /**
065 * Adds parameters.
066 *
067 * @param array $parameters An array of parameters
068 */
069 public function add(array $parameters = [])
070 {
071 $this->parameters = array_replace($this->parameters, $parameters);
072 }
073
074 /**
075 * Returns a parameter by name.
076 *
077 * @param string $key The key
078 * @param mixed $default The default value if the parameter key does not exist
079 *
080 * @return mixed
081 */
082 public function get($key, $default = null)
083 {
084 return \array_key_exists($key, $this->parameters) ? $this->parameters[$key] : $default;
085 }
086
087 /**
088 * Sets a parameter by name.
089 *
090 * @param string $key The key
091 * @param mixed $value The value
092 */
093 public function set($key, $value)
094 {
095 $this->parameters[$key] = $value;
096 }
097
098 /**
099 * Returns true if the parameter is defined.
100 *
101 * @param string $key The key
102 *
103 * @return bool true if the parameter exists, false otherwise
104 */
105 public function has($key)
106 {
107 return \array_key_exists($key, $this->parameters);
108 }
109
110 /**
111 * Removes a parameter.
112 *
113 * @param string $key The key
114 */
115 public function remove($key)
116 {
117 unset($this->parameters[$key]);
118 }
119
120 /**
121 * Returns the alphabetic characters of the parameter value.
122 *
123 * @param string $key The parameter key
124 * @param string $default The default value if the parameter key does not exist
125 *
126 * @return string The filtered value
127 */
128 public function getAlpha($key, $default = '')
129 {
130 return preg_replace('/[^[:alpha:]]/', '', $this->get($key, $default));
131 }
132
133 /**
134 * Returns the alphabetic characters and digits of the parameter value.
135 *
136 * @param string $key The parameter key
137 * @param string $default The default value if the parameter key does not exist
138 *
139 * @return string The filtered value
140 */
141 public function getAlnum($key, $default = '')
142 {
143 return preg_replace('/[^[:alnum:]]/', '', $this->get($key, $default));
144 }
145
146 /**
147 * Returns the digits of the parameter value.
148 *
149 * @param string $key The parameter key
150 * @param string $default The default value if the parameter key does not exist
151 *
152 * @return string The filtered value
153 */
154 public function getDigits($key, $default = '')
155 {
156 // we need to remove - and + because they're allowed in the filter
157 return str_replace(['-', '+'], '', $this->filter($key, $default, \FILTER_SANITIZE_NUMBER_INT));
158 }
159
160 /**
161 * Returns the parameter value converted to integer.
162 *
163 * @param string $key The parameter key
164 * @param int $default The default value if the parameter key does not exist
165 *
166 * @return int The filtered value
167 */
168 public function getInt($key, $default = 0)
169 {
170 return (int) $this->get($key, $default);
171 }
172
173 /**
174 * Returns the parameter value converted to boolean.
175 *
176 * @param string $key The parameter key
177 * @param bool $default The default value if the parameter key does not exist
178 *
179 * @return bool The filtered value
180 */
181 public function getBoolean($key, $default = false)
182 {
183 return $this->filter($key, $default, \FILTER_VALIDATE_BOOLEAN);
184 }
185
186 /**
187 * Filter key.
188 *
189 * @param string $key Key
190 * @param mixed $default Default = null
191 * @param int $filter FILTER_* constant
192 * @param mixed $options Filter options
193 *
194 * @see https://php.net/filter-var
195 *
196 * @return mixed
197 */
198 public function filter($key, $default = null, $filter = \FILTER_DEFAULT, $options = [])
199 {
200 $value = $this->get($key, $default);
201
202 // Always turn $options into an array - this allows filter_var option shortcuts.
203 if (!\is_array($options) && $options) {
204 $options = ['flags' => $options];
205 }
206
207 // Add a convenience check for arrays.
208 if (\is_array($value) && !isset($options['flags'])) {
209 $options['flags'] = \FILTER_REQUIRE_ARRAY;
210 }
211
212 return filter_var($value, $filter, $options);
213 }
214
215 /**
216 * Returns an iterator for parameters.
217 *
218 * @return \ArrayIterator An \ArrayIterator instance
219 */
220 public function getIterator()
221 {
222 return new \ArrayIterator($this->parameters);
223 }
224
225 /**
226 * Returns the number of parameters.
227 *
228 * @return int The number of parameters
229 */
230 public function count()
231 {
232 return \count($this->parameters);
233 }
234 }
235