Class luya\testsuite\components\DummySession

Inheritanceluya\testsuite\components\DummySession » yii\web\Session » yii\base\Component » yii\base\BaseObject
ImplementsArrayAccess, Countable, IteratorAggregate, yii\base\Configurable
Available since version1.0.24

Dummy Session handles set, remove and get based on an array.

Public Properties

Hide inherited properties

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
$cacheLimiter string Current cache limiter. yii\web\Session
$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. yii\web\Session
$handler luya\testsuite\components\DummySession
$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
$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\Session
$useStrictMode boolean Whether strict mode is enabled or not. yii\web\Session
$useTransparentSessionID boolean Whether transparent sid support is enabled or not, defaults to false. yii\web\Session

Protected Properties

Hide inherited properties

Property Type Description Defined By
$_forceRegenerateId string|null Holds the session id in case useStrictMode is enabled and the session id needs to be regenerated yii\web\Session
$_originalSessionModule string|null Holds the original session module (before a custom handler is registered) so that it can be restored when a Session component without custom handler is used after one that has. yii\web\Session

Public Methods

Hide inherited methods

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\BaseObject
__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\BaseObject
close() Ends the current session and store session data. 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
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
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
getCacheLimiter() Returns current cache limiter yii\web\Session
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\Session
getUseStrictMode() yii\web\Session
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 application component. yii\web\Session
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() luya\testsuite\components\DummySession
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
setCacheLimiter() Set cache limiter 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
setUseStrictMode() yii\web\Session
setUseTransparentSessionID() yii\web\Session
trigger() Triggers an event. yii\base\Component

Protected Methods

Hide inherited methods

Method Description Defined By
freeze() If session is started it's not possible to edit session ini settings. In PHP7.2+ it throws exception. yii\web\Session
registerSessionHandler() Registers session handler. yii\web\Session
unfreeze() Starts session and restores data from temporary variable yii\web\Session
updateFlashCounters() Updates the counters for flash messages and removes outdated flash messages. yii\web\Session

Property Details

Hide inherited properties

$handler public property
public $handler = [
    
'class' => \luya\testsuite\components\DummySessionHandler::class,
]

Method Details

Hide inherited methods

__call() public method

Defined in: yii\base\Component::__call()

Calls the named method which is not a class method.

This method will check if any attached behavior has the named method and will execute it if available.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

public mixed __call ( $name, $params )
$name string

The method name

$params array

Method parameters

return mixed

The method return value

throws yii\base\UnknownMethodException

when calling unknown method

                public function __call($name, $params)
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $object) {
        if ($object->hasMethod($name)) {
            return call_user_func_array([$object, $name], $params);
        }
    }
    throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}

            
__clone() public method

Defined in: yii\base\Component::__clone()

This method is called after the object is created by cloning an existing one.

It removes all behaviors because they are attached to the old object.

public void __clone ( )

                public function __clone()
{
    $this->_events = [];
    $this->_eventWildcards = [];
    $this->_behaviors = null;
}

            
__construct() public method

Defined in: yii\base\BaseObject::__construct()

Constructor.

The default implementation does two things:

  • Initializes the object with the given configuration $config.
  • Call init().

If this method is overridden in a child class, it is recommended that

  • the last parameter of the constructor is a configuration array, like $config here.
  • call the parent implementation at the end of the constructor.
public void __construct ( $config = [] )
$config array

Name-value pairs that will be used to initialize the object properties

                public function __construct($config = [])
{
    if (!empty($config)) {
        Yii::configure($this, $config);
    }
    $this->init();
}

            
__get() public method

Defined in: yii\base\Component::__get()

Returns the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a getter: return the getter result
  • a property of a behavior: return the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $component->property;.

See also __set().

public mixed __get ( $name )
$name string

The property name

return mixed

The property value or the value of a behavior's property

throws yii\base\UnknownPropertyException

if the property is not defined

throws yii\base\InvalidCallException

if the property is write-only.

                public function __get($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        // read property, e.g. getName()
        return $this->$getter();
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name;
        }
    }
    if (method_exists($this, 'set' . $name)) {
        throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}

            
__isset() public method

Defined in: yii\base\Component::__isset()

Checks if a property is set, i.e. defined and not null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: return whether the property is set
  • a property of a behavior: return whether the property is set
  • return false for non existing properties

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing isset($component->property).

See also https://www.php.net/manual/en/function.isset.php.

public boolean __isset ( $name )
$name string

The property name or the event name

return boolean

Whether the named property is set

                public function __isset($name)
{
    $getter = 'get' . $name;
    if (method_exists($this, $getter)) {
        return $this->$getter() !== null;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canGetProperty($name)) {
            return $behavior->$name !== null;
        }
    }
    return false;
}

            
__set() public method

Defined in: yii\base\Component::__set()

Sets the value of a component property.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value
  • an event in the format of "on xyz": attach the handler to the event "xyz"
  • a behavior in the format of "as xyz": attach the behavior named as "xyz"
  • a property of a behavior: set the behavior property value

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $component->property = $value;.

See also __get().

public void __set ( $name, $value )
$name string

The property name or the event name

$value mixed

The property value

throws yii\base\UnknownPropertyException

if the property is not defined

throws yii\base\InvalidCallException

if the property is read-only.

                public function __set($name, $value)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        // set property
        $this->$setter($value);
        return;
    } elseif (strncmp($name, 'on ', 3) === 0) {
        // on event: attach event handler
        $this->on(trim(substr($name, 3)), $value);
        return;
    } elseif (strncmp($name, 'as ', 3) === 0) {
        // as behavior: attach behavior
        $name = trim(substr($name, 3));
        $this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = $value;
            return;
        }
    }
    if (method_exists($this, 'get' . $name)) {
        throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
    }
    throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}

            
__unset() public method

Defined in: yii\base\Component::__unset()

Sets a component property to be null.

This method will check in the following order and act accordingly:

  • a property defined by a setter: set the property value to be null
  • a property of a behavior: set the property value to be null

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($component->property).

See also https://www.php.net/manual/en/function.unset.php.

public void __unset ( $name )
$name string

The property name

throws yii\base\InvalidCallException

if the property is read only.

                public function __unset($name)
{
    $setter = 'set' . $name;
    if (method_exists($this, $setter)) {
        $this->$setter(null);
        return;
    }
    // behavior property
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $behavior) {
        if ($behavior->canSetProperty($name)) {
            $behavior->$name = null;
            return;
        }
    }
    throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}

            
addFlash() public method

Defined in: yii\web\Session::addFlash()

Adds a flash message.

If there are existing flash messages with the same key, the new one will be appended to the existing message array.

See also:

public void addFlash ( $key, $value true, $removeAfterAccess true )
$key string

The key identifying the flash message.

$value mixed

Flash message

$removeAfterAccess boolean

Whether the flash message should be automatically removed only if it is accessed. If false, the flash message will be automatically removed after the next request, regardless if it is accessed or not. If true (default value), the flash message will remain until after it is accessed.

                public function addFlash($key, $value = true, $removeAfterAccess = true)
{
    $counters = $this->get($this->flashParam, []);
    $counters[$key] = $removeAfterAccess ? -1 : 0;
    $_SESSION[$this->flashParam] = $counters;
    if (empty($_SESSION[$key])) {
        $_SESSION[$key] = [$value];
    } elseif (is_array($_SESSION[$key])) {
        $_SESSION[$key][] = $value;
    } else {
        $_SESSION[$key] = [$_SESSION[$key], $value];
    }
}

            
attachBehavior() public method

Defined in: yii\base\Component::attachBehavior()

Attaches a behavior to this component.

This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.

See also detachBehavior().

public yii\base\Behavior attachBehavior ( $name, $behavior )
$name string

The name of the behavior.

$behavior string|array|yii\base\Behavior

The behavior configuration. This can be one of the following:

return yii\base\Behavior

The behavior object

                public function attachBehavior($name, $behavior)
{
    $this->ensureBehaviors();
    return $this->attachBehaviorInternal($name, $behavior);
}

            
attachBehaviors() public method

Defined in: yii\base\Component::attachBehaviors()

Attaches a list of behaviors to the component.

Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.

See also attachBehavior().

public void attachBehaviors ( $behaviors )
$behaviors array

List of behaviors to be attached to the component

                public function attachBehaviors($behaviors)
{
    $this->ensureBehaviors();
    foreach ($behaviors as $name => $behavior) {
        $this->attachBehaviorInternal($name, $behavior);
    }
}

            
behaviors() public method

Defined in: yii\base\Component::behaviors()

Returns a list of behaviors that this component should behave as.

Child classes may override this method to specify the behaviors they want to behave as.

The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:

'behaviorName' => [
    'class' => 'BehaviorClass',
    'property1' => 'value1',
    'property2' => 'value2',
]

Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.

Behaviors declared in this method will be attached to the component automatically (on demand).

public array behaviors ( )
return array

The behavior configurations.

                public function behaviors()
{
    return [];
}

            
canGetProperty() public method

Defined in: yii\base\Component::canGetProperty()

Returns a value indicating whether a property can be read.

A property can be read if:

  • the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a readable property of the given name (when $checkBehaviors is true).

See also canSetProperty().

public boolean canGetProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property can be read

                public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canGetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}

            
canSetProperty() public method

Defined in: yii\base\Component::canSetProperty()

Returns a value indicating whether a property can be set.

A property can be written if:

  • the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a writable property of the given name (when $checkBehaviors is true).

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property can be written

                public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
    if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->canSetProperty($name, $checkVars)) {
                return true;
            }
        }
    }
    return false;
}

            
className() public static method
Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.

Defined in: yii\base\BaseObject::className()

Returns the fully qualified name of this class.

public static string className ( )
return string

The fully qualified name of this class.

                public static function className()
{
    return get_called_class();
}

            
close() public method

Defined in: yii\web\Session::close()

Ends the current session and store session data.

public void close ( )

                public function close()
{
    if ($this->getIsActive()) {
        YII_DEBUG ? session_write_close() : @session_write_close();
    }
    $this->_forceRegenerateId = null;
}

            
count() public method

Defined in: yii\web\Session::count()

Returns the number of items in the session.

This method is required by Countable interface.

public integer count ( )
return integer

Number of items in the session.

                #[\ReturnTypeWillChange]
public function count()
{
    return $this->getCount();
}

            
destroy() public method

Defined in: yii\web\Session::destroy()

Frees all session variables and destroys all data registered to a session.

This method has no effect when session is not active. Make sure to call open() before calling it.

See also:

public void destroy ( )

                public function destroy()
{
    if ($this->getIsActive()) {
        $sessionId = session_id();
        $this->close();
        $this->setId($sessionId);
        $this->open();
        session_unset();
        session_destroy();
        $this->setId($sessionId);
    }
}

            
detachBehavior() public method

Defined in: yii\base\Component::detachBehavior()

Detaches a behavior from the component.

The behavior's yii\base\Behavior::detach() method will be invoked.

public yii\base\Behavior|null detachBehavior ( $name )
$name string

The behavior's name.

return yii\base\Behavior|null

The detached behavior. Null if the behavior does not exist.

                public function detachBehavior($name)
{
    $this->ensureBehaviors();
    if (isset($this->_behaviors[$name])) {
        $behavior = $this->_behaviors[$name];
        unset($this->_behaviors[$name]);
        $behavior->detach();
        return $behavior;
    }
    return null;
}

            
detachBehaviors() public method

Defined in: yii\base\Component::detachBehaviors()

Detaches all behaviors from the component.

public void detachBehaviors ( )

                public function detachBehaviors()
{
    $this->ensureBehaviors();
    foreach ($this->_behaviors as $name => $behavior) {
        $this->detachBehavior($name);
    }
}

            
ensureBehaviors() public method

Defined in: yii\base\Component::ensureBehaviors()

Makes sure that the behaviors declared in behaviors() are attached to this component.

public void ensureBehaviors ( )

                public function ensureBehaviors()
{
    if ($this->_behaviors === null) {
        $this->_behaviors = [];
        foreach ($this->behaviors() as $name => $behavior) {
            $this->attachBehaviorInternal($name, $behavior);
        }
    }
}

            
freeze() protected method (available since version 2.0.14)

Defined in: yii\web\Session::freeze()

If session is started it's not possible to edit session ini settings. In PHP7.2+ it throws exception.

This function saves session data to temporary variable and stop session.

protected void freeze ( )

                protected function freeze()
{
    if ($this->getIsActive()) {
        if (isset($_SESSION)) {
            $this->frozenSessionData = $_SESSION;
        }
        $this->close();
        Yii::info('Session frozen', __METHOD__);
    }
}

            
get() public method

Defined in: yii\web\Session::get()

Returns the session variable value with the session variable name.

If the session variable does not exist, the $defaultValue will be returned.

public mixed get ( $key, $defaultValue null )
$key string

The session variable name

$defaultValue mixed

The default value to be returned when the session variable does not exist.

return mixed

The session variable value, or $defaultValue if the session variable does not exist.

                public function get($key, $defaultValue = null)
{
    $this->open();
    return isset($_SESSION[$key]) ? $_SESSION[$key] : $defaultValue;
}

            
getAllFlashes() public method

Defined in: yii\web\Session::getAllFlashes()

Returns all flash messages.

You may use this method to display all the flash messages in a view file:

<?php
foreach (Yii::$app->session->getAllFlashes() as $key => $message) {
    echo '<div class="alert alert-' . $key . '">' . $message . '</div>';
} ?>

With the above code you can use the bootstrap alert classes such as success, info, danger as the flash message key to influence the color of the div.

Note that if you use addFlash(), $message will be an array, and you will have to adjust the above code.

See also:

public array getAllFlashes ( $delete false )
$delete boolean

Whether to delete the flash messages right after this method is called. If false, the flash messages will be automatically deleted in the next request.

return array

Flash messages (key => message or key => [message1, message2]).

                public function getAllFlashes($delete = false)
{
    $counters = $this->get($this->flashParam, []);
    $flashes = [];
    foreach (array_keys($counters) as $key) {
        if (array_key_exists($key, $_SESSION)) {
            $flashes[$key] = $_SESSION[$key];
            if ($delete) {
                unset($counters[$key], $_SESSION[$key]);
            } elseif ($counters[$key] < 0) {
                // mark for deletion in the next request
                $counters[$key] = 1;
            }
        } else {
            unset($counters[$key]);
        }
    }
    $_SESSION[$this->flashParam] = $counters;
    return $flashes;
}

            
getBehavior() public method

Defined in: yii\base\Component::getBehavior()

Returns the named behavior object.

public yii\base\Behavior|null getBehavior ( $name )
$name string

The behavior name

return yii\base\Behavior|null

The behavior object, or null if the behavior does not exist

                public function getBehavior($name)
{
    $this->ensureBehaviors();
    return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}

            
getBehaviors() public method

Defined in: yii\base\Component::getBehaviors()

Returns all behaviors attached to this component.

public yii\base\Behavior[] getBehaviors ( )
return yii\base\Behavior[]

List of behaviors attached to this component

                public function getBehaviors()
{
    $this->ensureBehaviors();
    return $this->_behaviors;
}

            
getCacheLimiter() public method (available since version 2.0.14)

Defined in: yii\web\Session::getCacheLimiter()

Returns current cache limiter

public string getCacheLimiter ( )
return string

Current cache limiter

                public function getCacheLimiter()
{
    return session_cache_limiter();
}

            
getCookieParams() public method
public array getCookieParams ( )
return array

The session cookie parameters.

                public function getCookieParams()
{
    return array_merge(session_get_cookie_params(), array_change_key_case($this->_cookieParams));
}

            
getCount() public method

Defined in: yii\web\Session::getCount()

Returns the number of items in the session.

public integer getCount ( )
return integer

The number of session variables

                public function getCount()
{
    $this->open();
    return count($_SESSION);
}

            
getFlash() public method
public mixed getFlash ( $key, $defaultValue null, $delete false )
$key string

The key identifying the flash message

$defaultValue mixed

Value to be returned if the flash message does not exist.

$delete boolean

Whether to delete this flash message right after this method is called. If false, the flash message will be automatically deleted in the next request.

return mixed

The flash message or an array of messages if addFlash was used

                public function getFlash($key, $defaultValue = null, $delete = false)
{
    $counters = $this->get($this->flashParam, []);
    if (isset($counters[$key])) {
        $value = $this->get($key, $defaultValue);
        if ($delete) {
            $this->removeFlash($key);
        } elseif ($counters[$key] < 0) {
            // mark for deletion in the next request
            $counters[$key] = 1;
            $_SESSION[$this->flashParam] = $counters;
        }
        return $value;
    }
    return $defaultValue;
}

            
getGCProbability() public method
public float getGCProbability ( )
return float

The probability (percentage) that the GC (garbage collection) process is started on every session initialization.

                public function getGCProbability()
{
    return (float) (ini_get('session.gc_probability') / ini_get('session.gc_divisor') * 100);
}

            
getHasSessionId() public method

Defined in: yii\web\Session::getHasSessionId()

Returns a value indicating whether the current request has sent the session ID.

The default implementation will check cookie and $_GET using the session name. If you send session ID via other ways, you may need to override this method or call setHasSessionId() to explicitly set whether the session ID is sent.

public boolean getHasSessionId ( )
return boolean

Whether the current request has sent the session ID.

                public function getHasSessionId()
{
    if ($this->_hasSessionId === null) {
        $name = $this->getName();
        $request = Yii::$app->getRequest();
        if (!empty($_COOKIE[$name]) && ini_get('session.use_cookies')) {
            $this->_hasSessionId = true;
        } elseif (!ini_get('session.use_only_cookies') && ini_get('session.use_trans_sid')) {
            $this->_hasSessionId = $request->get($name) != '';
        } else {
            $this->_hasSessionId = false;
        }
    }
    return $this->_hasSessionId;
}

            
getId() public method

Defined in: yii\web\Session::getId()

Gets the session ID.

This is a wrapper for PHP session_id().

public string getId ( )
return string

The current session ID

                public function getId()
{
    return session_id();
}

            
getIsActive() public method
public boolean getIsActive ( )
return boolean

Whether the session has started

                public function getIsActive()
{
    return session_status() === PHP_SESSION_ACTIVE;
}

            
getIterator() public method

Defined in: yii\web\Session::getIterator()

Returns an iterator for traversing the session variables.

This method is required by the interface IteratorAggregate.

public yii\web\SessionIterator getIterator ( )
return yii\web\SessionIterator

An iterator for traversing the session variables.

                #[\ReturnTypeWillChange]
public function getIterator()
{
    $this->open();
    return new SessionIterator();
}

            
getName() public method

Defined in: yii\web\Session::getName()

Gets the name of the current session.

This is a wrapper for PHP session_name().

public string getName ( )
return string

The current session name

                public function getName()
{
    return session_name();
}

            
getSavePath() public method

Defined in: yii\web\Session::getSavePath()

Gets the current session save path.

This is a wrapper for PHP session_save_path().

public string getSavePath ( )
return string

The current session save path, defaults to '/tmp'.

                public function getSavePath()
{
    return session_save_path();
}

            
getTimeout() public method
public integer getTimeout ( )
return integer

The number of seconds after which data will be seen as 'garbage' and cleaned up. The default value is 1440 seconds (or the value of "session.gc_maxlifetime" set in php.ini).

                public function getTimeout()
{
    return (int) ini_get('session.gc_maxlifetime');
}

            
getUseCookies() public method

Defined in: yii\web\Session::getUseCookies()

Returns the value indicating whether cookies should be used to store session IDs.

See also setUseCookies().

public boolean|null getUseCookies ( )
return boolean|null

The value indicating whether cookies should be used to store session IDs.

                public function getUseCookies()
{
    if (ini_get('session.use_cookies') === '0') {
        return false;
    } elseif (ini_get('session.use_only_cookies') === '1') {
        return true;
    }
    return null;
}

            
getUseCustomStorage() public method

Defined in: yii\web\Session::getUseCustomStorage()

Returns a value indicating whether to use custom session storage.

This method should be overridden to return true by child classes that implement custom session storage. To implement custom session storage, override these methods: openSession(), closeSession(), readSession(), writeSession(), destroySession() and gcSession().

public boolean getUseCustomStorage ( )
return boolean

Whether to use custom storage.

                public function getUseCustomStorage()
{
    return false;
}

            
getUseStrictMode() public method (available since version 2.0.38)
public boolean getUseStrictMode ( )
return boolean

Whether strict mode is enabled or not.

                public function getUseStrictMode()
{
    if (PHP_VERSION_ID < 50502) {
        return self::$_useStrictModePolyfill;
    }
    return (bool)ini_get('session.use_strict_mode');
}

            
getUseTransparentSessionID() public method
public boolean getUseTransparentSessionID ( )
return boolean

Whether transparent sid support is enabled or not, defaults to false.

                public function getUseTransparentSessionID()
{
    return ini_get('session.use_trans_sid') == 1;
}

            
has() public method
public boolean has ( $key )
$key mixed

Session variable name

return boolean

Whether there is the named session variable

                public function has($key)
{
    $this->open();
    return isset($_SESSION[$key]);
}

            
hasEventHandlers() public method

Defined in: yii\base\Component::hasEventHandlers()

Returns a value indicating whether there is any handler attached to the named event.

public boolean hasEventHandlers ( $name )
$name string

The event name

return boolean

Whether there is any handler attached to the event.

                public function hasEventHandlers($name)
{
    $this->ensureBehaviors();
    if (!empty($this->_events[$name])) {
        return true;
    }
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
            return true;
        }
    }
    return Event::hasHandlers($this, $name);
}

            
hasFlash() public method

Defined in: yii\web\Session::hasFlash()

Returns a value indicating whether there are flash messages associated with the specified key.

public boolean hasFlash ( $key )
$key string

Key identifying the flash message type

return boolean

Whether any flash messages exist under specified key

                public function hasFlash($key)
{
    return $this->getFlash($key) !== null;
}

            
hasMethod() public method

Defined in: yii\base\Component::hasMethod()

Returns a value indicating whether a method is defined.

A method is defined if:

  • the class has a method with the specified name
  • an attached behavior has a method with the given name (when $checkBehaviors is true).
public boolean hasMethod ( $name, $checkBehaviors true )
$name string

The property name

$checkBehaviors boolean

Whether to treat behaviors' methods as methods of this component

return boolean

Whether the method is defined

                public function hasMethod($name, $checkBehaviors = true)
{
    if (method_exists($this, $name)) {
        return true;
    } elseif ($checkBehaviors) {
        $this->ensureBehaviors();
        foreach ($this->_behaviors as $behavior) {
            if ($behavior->hasMethod($name)) {
                return true;
            }
        }
    }
    return false;
}

            
hasProperty() public method

Defined in: yii\base\Component::hasProperty()

Returns a value indicating whether a property is defined for this component.

A property is defined if:

  • the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
  • the class has a member variable with the specified name (when $checkVars is true);
  • an attached behavior has a property of the given name (when $checkBehaviors is true).

See also:

public boolean hasProperty ( $name, $checkVars true, $checkBehaviors true )
$name string

The property name

$checkVars boolean

Whether to treat member variables as properties

$checkBehaviors boolean

Whether to treat behaviors' properties as properties of this component

return boolean

Whether the property is defined

                public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
    return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}

            
init() public method

Defined in: yii\web\Session::init()

Initializes the application component.

This method is required by IApplicationComponent and is invoked by application.

public void init ( )

                public function init()
{
    parent::init();
    register_shutdown_function([$this, 'close']);
    if ($this->getIsActive()) {
        Yii::warning('Session is already started', __METHOD__);
        $this->updateFlashCounters();
    }
}

            
off() public method

Defined in: yii\base\Component::off()

Detaches an existing event handler from this component.

This method is the opposite of on().

Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.

See also on().

public boolean off ( $name, $handler null )
$name string

Event name

$handler callable|null

The event handler to be removed. If it is null, all handlers attached to the named event will be removed.

return boolean

If a handler is found and detached

                public function off($name, $handler = null)
{
    $this->ensureBehaviors();
    if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
        return false;
    }
    if ($handler === null) {
        unset($this->_events[$name], $this->_eventWildcards[$name]);
        return true;
    }
    $removed = false;
    // plain event names
    if (isset($this->_events[$name])) {
        foreach ($this->_events[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_events[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_events[$name] = array_values($this->_events[$name]);
            return true;
        }
    }
    // wildcard event names
    if (isset($this->_eventWildcards[$name])) {
        foreach ($this->_eventWildcards[$name] as $i => $event) {
            if ($event[0] === $handler) {
                unset($this->_eventWildcards[$name][$i]);
                $removed = true;
            }
        }
        if ($removed) {
            $this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
            // remove empty wildcards to save future redundant regex checks:
            if (empty($this->_eventWildcards[$name])) {
                unset($this->_eventWildcards[$name]);
            }
        }
    }
    return $removed;
}

            
offsetExists() public method

Defined in: yii\web\Session::offsetExists()

This method is required by the interface ArrayAccess.

public boolean offsetExists ( $offset )
$offset integer|string

The offset to check on

                #[\ReturnTypeWillChange]
public function offsetExists($offset)
{
    $this->open();
    return isset($_SESSION[$offset]);
}

            
offsetGet() public method

Defined in: yii\web\Session::offsetGet()

This method is required by the interface ArrayAccess.

public mixed offsetGet ( $offset )
$offset integer|string

The offset to retrieve element.

return mixed

The element at the offset, null if no element is found at the offset

                #[\ReturnTypeWillChange]
public function offsetGet($offset)
{
    $this->open();
    return isset($_SESSION[$offset]) ? $_SESSION[$offset] : null;
}

            
offsetSet() public method

Defined in: yii\web\Session::offsetSet()

This method is required by the interface ArrayAccess.

public void offsetSet ( $offset, $item )
$offset integer|string

The offset to set element

$item mixed

The element value

                #[\ReturnTypeWillChange]
public function offsetSet($offset, $item)
{
    $this->open();
    $_SESSION[$offset] = $item;
}

            
offsetUnset() public method

Defined in: yii\web\Session::offsetUnset()

This method is required by the interface ArrayAccess.

public void offsetUnset ( $offset )
$offset integer|string

The offset to unset element

                #[\ReturnTypeWillChange]
public function offsetUnset($offset)
{
    $this->open();
    unset($_SESSION[$offset]);
}

            
on() public method

Defined in: yii\base\Component::on()

Attaches an event handler to an event.

The event handler must be a valid PHP callback. The following are some examples:

function ($event) { ... }         // anonymous function
[$object, 'handleClick']          // $object->handleClick()
['Page', 'handleClick']           // Page::handleClick()
'handleClick'                     // global function handleClick()

The event handler must be defined with the following signature,

function ($event)

where $event is an yii\base\Event object which includes parameters associated with the event.

Since 2.0.14 you can specify event name as a wildcard pattern:

$component->on('event.group.*', function ($event) {
    Yii::trace($event->name . ' is triggered.');
});

See also off().

public void on ( $name, $handler, $data null, $append true )
$name string

The event name

$handler callable

The event handler

$data mixed

The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data.

$append boolean

Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list.

                public function on($name, $handler, $data = null, $append = true)
{
    $this->ensureBehaviors();
    if (strpos($name, '*') !== false) {
        if ($append || empty($this->_eventWildcards[$name])) {
            $this->_eventWildcards[$name][] = [$handler, $data];
        } else {
            array_unshift($this->_eventWildcards[$name], [$handler, $data]);
        }
        return;
    }
    if ($append || empty($this->_events[$name])) {
        $this->_events[$name][] = [$handler, $data];
    } else {
        array_unshift($this->_events[$name], [$handler, $data]);
    }
}

            
open() public method

public void open ( )

                public function open()
{
    // do nothing!
}

            
regenerateID() public method

Defined in: yii\web\Session::regenerateID()

Updates the current session ID with a newly generated one.

Please refer to https://www.php.net/session_regenerate_id for more details.

This method has no effect when session is not active. Make sure to call open() before calling it.

See also:

public void regenerateID ( $deleteOldSession false )
$deleteOldSession boolean

Whether to delete the old associated session file or not.

                public function regenerateID($deleteOldSession = false)
{
    if ($this->getIsActive()) {
        // add @ to inhibit possible warning due to race condition
        // https://github.com/yiisoft/yii2/pull/1812
        if (YII_DEBUG && !headers_sent()) {
            session_regenerate_id($deleteOldSession);
        } else {
            @session_regenerate_id($deleteOldSession);
        }
    }
}

            
registerSessionHandler() protected method

Defined in: yii\web\Session::registerSessionHandler()

Registers session handler.

protected void registerSessionHandler ( )
throws yii\base\InvalidConfigException

                protected function registerSessionHandler()
{
    $sessionModuleName = session_module_name();
    if (static::$_originalSessionModule === null) {
        static::$_originalSessionModule = $sessionModuleName;
    }
    if ($this->handler !== null) {
        if (!is_object($this->handler)) {
            $this->handler = Yii::createObject($this->handler);
        }
        if (!$this->handler instanceof \SessionHandlerInterface) {
            throw new InvalidConfigException('"' . get_class($this) . '::handler" must implement the SessionHandlerInterface.');
        }
        YII_DEBUG ? session_set_save_handler($this->handler, false) : @session_set_save_handler($this->handler, false);
    } elseif ($this->getUseCustomStorage()) {
        if (YII_DEBUG) {
            session_set_save_handler(
                [$this, 'openSession'],
                [$this, 'closeSession'],
                [$this, 'readSession'],
                [$this, 'writeSession'],
                [$this, 'destroySession'],
                [$this, 'gcSession']
            );
        } else {
            @session_set_save_handler(
                [$this, 'openSession'],
                [$this, 'closeSession'],
                [$this, 'readSession'],
                [$this, 'writeSession'],
                [$this, 'destroySession'],
                [$this, 'gcSession']
            );
        }
    } elseif (
        $sessionModuleName !== static::$_originalSessionModule
        && static::$_originalSessionModule !== null
        && static::$_originalSessionModule !== 'user'
    ) {
        session_module_name(static::$_originalSessionModule);
    }
}

            
remove() public method

Defined in: yii\web\Session::remove()

Removes a session variable.

public mixed remove ( $key )
$key string

The name of the session variable to be removed

return mixed

The removed value, null if no such session variable.

                public function remove($key)
{
    $this->open();
    if (isset($_SESSION[$key])) {
        $value = $_SESSION[$key];
        unset($_SESSION[$key]);
        return $value;
    }
    return null;
}

            
removeAll() public method

Defined in: yii\web\Session::removeAll()

Removes all session variables.

public void removeAll ( )

                public function removeAll()
{
    $this->open();
    foreach (array_keys($_SESSION) as $key) {
        unset($_SESSION[$key]);
    }
}

            
removeAllFlashes() public method

Defined in: yii\web\Session::removeAllFlashes()

Removes all flash messages.

Note that flash messages and normal session variables share the same name space. If you have a normal session variable using the same name, it will be removed by this method.

See also:

public void removeAllFlashes ( )

                public function removeAllFlashes()
{
    $counters = $this->get($this->flashParam, []);
    foreach (array_keys($counters) as $key) {
        unset($_SESSION[$key]);
    }
    unset($_SESSION[$this->flashParam]);
}

            
removeFlash() public method
public mixed removeFlash ( $key )
$key string

The key identifying the flash message. Note that flash messages and normal session variables share the same name space. If you have a normal session variable using the same name, it will be removed by this method.

return mixed

The removed flash message. Null if the flash message does not exist.

                public function removeFlash($key)
{
    $counters = $this->get($this->flashParam, []);
    $value = isset($_SESSION[$key], $counters[$key]) ? $_SESSION[$key] : null;
    unset($counters[$key], $_SESSION[$key]);
    $_SESSION[$this->flashParam] = $counters;
    return $value;
}

            
set() public method

Defined in: yii\web\Session::set()

Adds a session variable.

If the specified name already exists, the old value will be overwritten.

public void set ( $key, $value )
$key string

Session variable name

$value mixed

Session variable value

                public function set($key, $value)
{
    $this->open();
    $_SESSION[$key] = $value;
}

            
setCacheLimiter() public method (available since version 2.0.14)

Defined in: yii\web\Session::setCacheLimiter()

Set cache limiter

public void setCacheLimiter ( $cacheLimiter )
$cacheLimiter string

                public function setCacheLimiter($cacheLimiter)
{
    $this->freeze();
    session_cache_limiter($cacheLimiter);
    $this->unfreeze();
}

            
setCookieParams() public method

Defined in: yii\web\Session::setCookieParams()

Sets the session cookie parameters.

The cookie parameters passed to this method will be merged with the result of session_get_cookie_params().

See also https://www.php.net/manual/en/function.session-set-cookie-params.php.

public void setCookieParams ( array $value )
$value array

Cookie parameters, valid keys include: lifetime, path, domain, secure and httponly. Starting with Yii 2.0.21 sameSite is also supported. It requires PHP version 7.3.0 or higher. For securtiy, an exception will be thrown if sameSite is set while using an unsupported version of PHP. To use this feature across different PHP versions check the version first. E.g. `php [

'sameSite' => PHP_VERSION_ID >= 70300 ? yii\web\Cookie::SAME_SITE_LAX : null,

] ` See https://www.owasp.org/index.php/SameSite for more information about sameSite.

throws yii\base\InvalidArgumentException

if the parameters are incomplete.

                public function setCookieParams(array $value)
{
    $this->_cookieParams = $value;
}

            
setFlash() public method

Defined in: yii\web\Session::setFlash()

Sets a flash message.

A flash message will be automatically deleted after it is accessed in a request and the deletion will happen in the next request. If there is already an existing flash message with the same key, it will be overwritten by the new one.

See also:

public void setFlash ( $key, $value true, $removeAfterAccess true )
$key string

The key identifying the flash message. Note that flash messages and normal session variables share the same name space. If you have a normal session variable using the same name, its value will be overwritten by this method.

$value mixed

Flash message

$removeAfterAccess boolean

Whether the flash message should be automatically removed only if it is accessed. If false, the flash message will be automatically removed after the next request, regardless if it is accessed or not. If true (default value), the flash message will remain until after it is accessed.

                public function setFlash($key, $value = true, $removeAfterAccess = true)
{
    $counters = $this->get($this->flashParam, []);
    $counters[$key] = $removeAfterAccess ? -1 : 0;
    $_SESSION[$key] = $value;
    $_SESSION[$this->flashParam] = $counters;
}

            
setGCProbability() public method
public void setGCProbability ( $value )
$value float

The probability (percentage) that the GC (garbage collection) process is started on every session initialization.

throws yii\base\InvalidArgumentException

if the value is not between 0 and 100.

                public function setGCProbability($value)
{
    $this->freeze();
    if ($value >= 0 && $value <= 100) {
        // percent * 21474837 / 2147483647 ≈ percent * 0.01
        ini_set('session.gc_probability', floor($value * 21474836.47));
        ini_set('session.gc_divisor', 2147483647);
    } else {
        throw new InvalidArgumentException('GCProbability must be a value between 0 and 100.');
    }
    $this->unfreeze();
}

            
setHasSessionId() public method

Defined in: yii\web\Session::setHasSessionId()

Sets the value indicating whether the current request has sent the session ID.

This method is provided so that you can override the default way of determining whether the session ID is sent.

public void setHasSessionId ( $value )
$value boolean

Whether the current request has sent the session ID.

                public function setHasSessionId($value)
{
    $this->_hasSessionId = $value;
}

            
setId() public method

Defined in: yii\web\Session::setId()

Sets the session ID.

This is a wrapper for PHP session_id().

public void setId ( $value )
$value string

The session ID for the current session

                public function setId($value)
{
    session_id($value);
}

            
setName() public method

Defined in: yii\web\Session::setName()

Sets the name for the current session.

This is a wrapper for PHP session_name().

public void setName ( $value )
$value string

The session name for the current session, must be an alphanumeric string. It defaults to "PHPSESSID".

                public function setName($value)
{
    $this->freeze();
    session_name($value);
    $this->unfreeze();
}

            
setSavePath() public method

Defined in: yii\web\Session::setSavePath()

Sets the current session save path.

This is a wrapper for PHP session_save_path().

public void setSavePath ( $value )
$value string

The current session save path. This can be either a directory name or a path alias.

throws yii\base\InvalidArgumentException

if the path is not a valid directory

                public function setSavePath($value)
{
    $path = Yii::getAlias($value);
    if (is_dir($path)) {
        session_save_path($path);
    } else {
        throw new InvalidArgumentException("Session save path is not a valid directory: $value");
    }
}

            
setTimeout() public method
public void setTimeout ( $value )
$value integer

The number of seconds after which data will be seen as 'garbage' and cleaned up

                public function setTimeout($value)
{
    $this->freeze();
    ini_set('session.gc_maxlifetime', $value);
    $this->unfreeze();
}

            
setUseCookies() public method

Defined in: yii\web\Session::setUseCookies()

Sets the value indicating whether cookies should be used to store session IDs.

Three states are possible:

  • true: cookies and only cookies will be used to store session IDs.
  • false: cookies will not be used to store session IDs.
  • null: if possible, cookies will be used to store session IDs; if not, other mechanisms will be used (e.g. GET parameter)
public void setUseCookies ( $value )
$value boolean|null

The value indicating whether cookies should be used to store session IDs.

                public function setUseCookies($value)
{
    $this->freeze();
    if ($value === false) {
        ini_set('session.use_cookies', '0');
        ini_set('session.use_only_cookies', '0');
    } elseif ($value === true) {
        ini_set('session.use_cookies', '1');
        ini_set('session.use_only_cookies', '1');
    } else {
        ini_set('session.use_cookies', '1');
        ini_set('session.use_only_cookies', '0');
    }
    $this->unfreeze();
}

            
setUseStrictMode() public method (available since version 2.0.38)
public void setUseStrictMode ( $value )
$value boolean

Whether strict mode is enabled or not. When true this setting prevents the session component to use an uninitialized session ID. Note: Enabling useStrictMode on PHP < 5.5.2 is only supported with custom storage classes. Warning! Although enabling strict mode is mandatory for secure sessions, the default value of 'session.use-strict-mode' is 0.

                public function setUseStrictMode($value)
{
    if (PHP_VERSION_ID < 50502) {
        if ($this->getUseCustomStorage() || !$value) {
            self::$_useStrictModePolyfill = $value;
        } else {
            throw new InvalidConfigException('Enabling `useStrictMode` on PHP < 5.5.2 is only supported with custom storage classes.');
        }
    } else {
        $this->freeze();
        ini_set('session.use_strict_mode', $value ? '1' : '0');
        $this->unfreeze();
    }
}

            
setUseTransparentSessionID() public method
public void setUseTransparentSessionID ( $value )
$value boolean

Whether transparent sid support is enabled or not.

                public function setUseTransparentSessionID($value)
{
    $this->freeze();
    ini_set('session.use_trans_sid', $value ? '1' : '0');
    $this->unfreeze();
}

            
trigger() public method

Defined in: yii\base\Component::trigger()

Triggers an event.

This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.

public void trigger ( $name, yii\base\Event $event null )
$name string

The event name

$event yii\base\Event|null

The event instance. If not set, a default yii\base\Event object will be created.

                public function trigger($name, Event $event = null)
{
    $this->ensureBehaviors();
    $eventHandlers = [];
    foreach ($this->_eventWildcards as $wildcard => $handlers) {
        if (StringHelper::matchWildcard($wildcard, $name)) {
            $eventHandlers[] = $handlers;
        }
    }
    if (!empty($this->_events[$name])) {
        $eventHandlers[] = $this->_events[$name];
    }
    if (!empty($eventHandlers)) {
        $eventHandlers = call_user_func_array('array_merge', $eventHandlers);
        if ($event === null) {
            $event = new Event();
        }
        if ($event->sender === null) {
            $event->sender = $this;
        }
        $event->handled = false;
        $event->name = $name;
        foreach ($eventHandlers as $handler) {
            $event->data = $handler[1];
            call_user_func($handler[0], $event);
            // stop further handling if the event is handled
            if ($event->handled) {
                return;
            }
        }
    }
    // invoke class-level attached handlers
    Event::trigger($this, $name, $event);
}

            
unfreeze() protected method (available since version 2.0.14)

Defined in: yii\web\Session::unfreeze()

Starts session and restores data from temporary variable

protected void unfreeze ( )

                protected function unfreeze()
{
    if (null !== $this->frozenSessionData) {
        YII_DEBUG ? session_start() : @session_start();
        if ($this->getIsActive()) {
            Yii::info('Session unfrozen', __METHOD__);
        } else {
            $error = error_get_last();
            $message = isset($error['message']) ? $error['message'] : 'Failed to unfreeze session.';
            Yii::error($message, __METHOD__);
        }
        $_SESSION = $this->frozenSessionData;
        $this->frozenSessionData = null;
    }
}

            
updateFlashCounters() protected method

Defined in: yii\web\Session::updateFlashCounters()

Updates the counters for flash messages and removes outdated flash messages.

This method should only be called once in init().

protected void updateFlashCounters ( )

                protected function updateFlashCounters()
{
    $counters = $this->get($this->flashParam, []);
    if (is_array($counters)) {
        foreach ($counters as $key => $count) {
            if ($count > 0) {
                unset($counters[$key], $_SESSION[$key]);
            } elseif ($count == 0) {
                $counters[$key]++;
            }
        }
        $_SESSION[$this->flashParam] = $counters;
    } else {
        // fix the unexpected problem that flashParam doesn't return an array
        unset($_SESSION[$this->flashParam]);
    }
}