| Inheritance | yii\web\MultiFieldSession » yii\web\Session » yii\base\Component » yii\base\Object |
|---|---|
| Implements | ArrayAccess, Countable, IteratorAggregate, yii\base\Configurable |
| Subclasses | yii\mongodb\Session, yii\web\DbSession |
| Available since version | 2.0.6 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/web/MultiFieldSession.php |
MultiFieldSession is the base class for session storage implementations with multi-field data storage support.
With multi-field data storage, session data can be split between several fields in the storage record. Using such a storage allows saving particular session data into separated field, which then can be used to manipulate sessions in the way plain PHP does not allow.
For example the ID of the authenticated user can be saved as separated column in the MySQL 'session' table, which allows to query all active sessions for a particular user or terminate them at will.
Customizing of the session writing is performed via $writeCallback, reading via $readCallback.
While extending this class you should use composeFields() method - while writing the session data into the storage and extractData() - while reading session data from the storage.
| Property | Type | Description | Defined By |
|---|---|---|---|
| $allFlashes | array | Flash messages (key => message or key => [message1, message2]). | yii\web\Session |
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component | yii\base\Component |
| $cookieParams | array | The session cookie parameters. | yii\web\Session |
| $count | integer | The number of session variables | yii\web\Session |
| $flash | string | The key identifying the flash message. | yii\web\Session |
| $flashParam | string | The name of the session variable that stores the flash message data. | yii\web\Session |
| $gCProbability | float | The probability (percentage) that the GC (garbage collection) process is started on every session initialization, defaults to 1 meaning 1% chance. | yii\web\Session |
| $handler | SessionHandlerInterface|array | An object implementing the SessionHandlerInterface or a configuration array. | yii\web\Session |
| $hasSessionId | boolean | Whether the current request has sent the session ID. | yii\web\Session |
| $id | string | The current session ID | yii\web\Session |
| $isActive | boolean | Whether the session has started | yii\web\Session |
| $iterator | yii\web\SessionIterator | An iterator for traversing the session variables. | yii\web\Session |
| $name | string | The current session name | yii\web\Session |
| $readCallback | callable | A callback that will be called during session data reading. | yii\web\MultiFieldSession |
| $savePath | string | The current session save path, defaults to '/tmp'. | yii\web\Session |
| $timeout | integer | The number of seconds after which data will be seen as 'garbage' and cleaned up. | yii\web\Session |
| $useCookies | boolean|null | The value indicating whether cookies should be used to store session IDs. | yii\web\Session |
| $useCustomStorage | boolean | Whether to use custom storage. | yii\web\MultiFieldSession |
| $useTransparentSessionID | boolean | Whether transparent sid support is enabled or not, defaults to false. | yii\web\Session |
| $writeCallback | callable | A callback that will be called during session data writing. | yii\web\MultiFieldSession |
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\Component |
| __clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
| __construct() | Constructor. | yii\base\Object |
| __get() | Returns the value of a component property. | yii\base\Component |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Component |
| __set() | Sets the value of a component property. | yii\base\Component |
| __unset() | Sets a component property to be null. | yii\base\Component |
| addFlash() | Adds a flash message. | yii\web\Session |
| attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
| attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
| behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
| canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\Component |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Component |
| className() | Returns the fully qualified name of this class. | yii\base\Object |
| close() | Ends the current session and store session data. | yii\web\Session |
| closeSession() | Session close handler. | yii\web\Session |
| count() | Returns the number of items in the session. | yii\web\Session |
| destroy() | Frees all session variables and destroys all data registered to a session. | yii\web\Session |
| destroySession() | Session destroy handler. | yii\web\Session |
| detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
| detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
| ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
| gcSession() | Session GC (garbage collection) handler. | yii\web\Session |
| get() | Returns the session variable value with the session variable name. | yii\web\Session |
| getAllFlashes() | Returns all flash messages. | yii\web\Session |
| getBehavior() | Returns the named behavior object. | yii\base\Component |
| getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
| getCookieParams() | yii\web\Session | |
| getCount() | Returns the number of items in the session. | yii\web\Session |
| getFlash() | Returns a flash message. | yii\web\Session |
| getGCProbability() | yii\web\Session | |
| getHasSessionId() | Returns a value indicating whether the current request has sent the session ID. | yii\web\Session |
| getId() | Gets the session ID. | yii\web\Session |
| getIsActive() | yii\web\Session | |
| getIterator() | Returns an iterator for traversing the session variables. | yii\web\Session |
| getName() | Gets the name of the current session. | yii\web\Session |
| getSavePath() | Gets the current session save path. | yii\web\Session |
| getTimeout() | yii\web\Session | |
| getUseCookies() | Returns the value indicating whether cookies should be used to store session IDs. | yii\web\Session |
| getUseCustomStorage() | Returns a value indicating whether to use custom session storage. | yii\web\MultiFieldSession |
| getUseTransparentSessionID() | yii\web\Session | |
| has() | yii\web\Session | |
| hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
| hasFlash() | Returns a value indicating whether there are flash messages associated with the specified key. | yii\web\Session |
| hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component |
| hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
| init() | Initializes the object. | yii\base\Object |
| off() | Detaches an existing event handler from this component. | yii\base\Component |
| offsetExists() | This method is required by the interface ArrayAccess. | yii\web\Session |
| offsetGet() | This method is required by the interface ArrayAccess. | yii\web\Session |
| offsetSet() | This method is required by the interface ArrayAccess. | yii\web\Session |
| offsetUnset() | This method is required by the interface ArrayAccess. | yii\web\Session |
| on() | Attaches an event handler to an event. | yii\base\Component |
| open() | Starts the session. | yii\web\Session |
| openSession() | Session open handler. | yii\web\Session |
| readSession() | Session read handler. | yii\web\Session |
| regenerateID() | Updates the current session ID with a newly generated one. | yii\web\Session |
| remove() | Removes a session variable. | yii\web\Session |
| removeAll() | Removes all session variables | yii\web\Session |
| removeAllFlashes() | Removes all flash messages. | yii\web\Session |
| removeFlash() | Removes a flash message. | yii\web\Session |
| set() | Adds a session variable. | yii\web\Session |
| setCookieParams() | Sets the session cookie parameters. | yii\web\Session |
| setFlash() | Sets a flash message. | yii\web\Session |
| setGCProbability() | yii\web\Session | |
| setHasSessionId() | Sets the value indicating whether the current request has sent the session ID. | yii\web\Session |
| setId() | Sets the session ID. | yii\web\Session |
| setName() | Sets the name for the current session. | yii\web\Session |
| setSavePath() | Sets the current session save path. | yii\web\Session |
| setTimeout() | yii\web\Session | |
| setUseCookies() | Sets the value indicating whether cookies should be used to store session IDs. | yii\web\Session |
| setUseTransparentSessionID() | yii\web\Session | |
| trigger() | Triggers an event. | yii\base\Component |
| writeSession() | Session write handler. | yii\web\Session |
| Method | Description | Defined By |
|---|---|---|
| composeFields() | Composes storage field set for session writing. | yii\web\MultiFieldSession |
| extractData() | Extracts session data from storage field set. | yii\web\MultiFieldSession |
| registerSessionHandler() | Registers session handler. | yii\web\Session |
| updateFlashCounters() | Updates the counters for flash messages and removes outdated flash messages. | yii\web\Session |
A callback that will be called during session data reading. The signature of the callback should be as follows:
function ($fields)
where $fields is the storage field set for read session and $session is this session instance. If callback returns an array, it will be merged into the session data.
For example:
function ($fields) {
return [
'expireDate' => Yii::$app->formatter->asDate($fields['expire']),
];
}
public callable $readCallback = null
Whether to use custom storage.
public boolean getUseCustomStorage ( )
A callback that will be called during session data writing. The signature of the callback should be as follows:
function ($session)
where $session is this session instance, this variable can be used to retrieve session data. Callback should return the actual fields set, which should be saved into the session storage.
For example:
function ($session) {
return [
'user_id' => Yii::$app->user->id,
'ip' => $_SERVER['REMOTE_ADDR'],
'is_trusted' => $session->get('is_trusted', false),
];
}
public callable $writeCallback = null
Composes storage field set for session writing.
| protected array composeFields ( $id, $data ) | ||
|---|---|---|
| $id | string |
Session id |
| $data | string |
Session data |
| return | array |
Storage fields |
Extracts session data from storage field set.
| protected string extractData ( $fields ) | ||
|---|---|---|
| $fields | array |
Storage fields. |
| return | string |
Session data. |
Returns a value indicating whether to use custom session storage.
This method overrides the parent implementation and always returns true.
| public boolean getUseCustomStorage ( ) | ||
|---|---|---|
| return | boolean |
Whether to use custom storage. |
© 2008–2017 by Yii Software LLC
Licensed under the three clause BSD license.
http://www.yiiframework.com/doc-2.0/yii-web-multifieldsession.html