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CakePHP

C CakePHP 1.2 API

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Class CakeSession

Session class for Cake.

Cake abstracts the handling of sessions. There are several convenient methods to access session information. This class is the implementation of those methods. They are mostly used by the Session Component.

Object
Extended by CakeSession
Direct Subclasses
  • SessionComponent
  • SessionHelper
Package: cake\cake\libs
Copyright: Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
License: The MIT License
Location: session.php

Properties summary

  • $_userAgent public
    string
    User agent string
  • $error public
    array
    Error messages for this session
  • $host public
    string
    Hostname
  • $id public
    string
    Current Session id
  • $lastError public
    integer
    Error number of last occurred error
  • $path public
    string
    Path to where the session is active.
  • $security public
    string
    'Security.level' setting, "high", "medium", or "low".
  • $sessionTime public
    integer
    Time when this session becomes invalid.
  • $time public
    integer
    Start time for this session.
  • $valid public
    boolean
    True if the Session is still valid
  • $watchKeys public
    array
    Keeps track of keys to watch for writes on

Inherited Properties

  • _log

Method Summary

  • __close() public
    Method called on close of a database session.
  • __construct() public
    Constructor.
  • __destroy() public
    Method called on the destruction of a database session.
  • __error() public
    Return error description for given error number.
  • __gc() public
    Helper function called on gc for database sessions.
  • __initSession() public
    Helper method to initialize a session, based on Cake core settings.
  • __open() public
    Method called on open of a database session.
  • __overwrite() public
    Used to write new data to _SESSION, since PHP doesn't like us setting the _SESSION var itself
  • __read() public
    Method used to read from a database session.
  • __regenerateId() public
    Helper method to restart a session.
  • __returnSessionVars() public
    Returns all session variables.
  • __setError() public
    Helper method to set an internal error message.
  • __startSession() public
    Helper method to start a session
  • __validateKeys() public

    Validate that the $name is in correct dot notation example: $name = 'ControllerName.key';

  • __write() public
    Helper function called on write for database sessions.
  • _checkValid() public
    Helper method to create a new session.
  • check() public
    Returns true if given variable is set in session.
  • del() public
    Removes a variable from session.
  • destroy() public
    Helper method to destroy invalid sessions.
  • error() public
    Returns last occurred error as a string, if any.
  • id() public
    Returns the Session id
  • ignore() public
    Tells Session to stop watching a given key path
  • read() public
    Returns given session variable, or all of them, if no parameters given.
  • renew() public
    Restarts this session.
  • start() public
    Starts the Session.
  • started() public
    Determine if Session has been started.
  • valid() public
    Returns true if session is valid.
  • watch() public
    Tells Session to write a notification when a certain session path or subpath is written to
  • write() public
    Writes value to given session variable name.

Method Detail

__close() public ¶

__close( )

Method called on close of a database session.

Returns
boolean
Success

__construct() public ¶

__construct( string $base = null , boolean $start = true )

Constructor.

Parameters
string $base optional null
The base path for the Session
boolean $start optional true
Should session be started right now
Overrides
Object::__construct()

__destroy() public ¶

__destroy( integer $key )

Method called on the destruction of a database session.

Parameters
integer $key
Key that uniquely identifies session in database
Returns
boolean
Success

__error() public ¶

__error( integer $errorNumber )

Return error description for given error number.

Parameters
integer $errorNumber
Error to set
Returns
string
Error as string

__gc() public ¶

__gc( integer $expires = null )

Helper function called on gc for database sessions.

Parameters
integer $expires optional null
Timestamp (defaults to current time)
Returns
boolean
Success

__initSession() public ¶

__initSession( )

Helper method to initialize a session, based on Cake core settings.

__open() public ¶

__open( )

Method called on open of a database session.

Returns
boolean
Success

__overwrite() public ¶

__overwrite( array $old , array $new )

Used to write new data to _SESSION, since PHP doesn't like us setting the _SESSION var itself

Parameters
array $old
Set of old variables => values
array $new
New set of variable => value

__read() public ¶

__read( mixed $key )

Method used to read from a database session.

Parameters
mixed $key
The key of the value to read
Returns
mixed
The value of the key or false if it does not exist

__regenerateId() public ¶

__regenerateId( )

Helper method to restart a session.

__returnSessionVars() public ¶

__returnSessionVars( )

Returns all session variables.

Returns
mixed
Full $_SESSION array, or false on error.

__setError() public ¶

__setError( integer $errorNumber , string $errorMessage )

Helper method to set an internal error message.

Parameters
integer $errorNumber
Number of the error
string $errorMessage
Description of the error

__startSession() public ¶

__startSession( )

Helper method to start a session

__validateKeys() public ¶

__validateKeys( string $name )

Validate that the $name is in correct dot notation example: $name = 'ControllerName.key';

Parameters
string $name
Session key names as string.
Returns
mixed
false is $name is not correct format, or $name if it is correct

__write() public ¶

__write( mixed $key , mixed $value )

Helper function called on write for database sessions.

Parameters
mixed $key
The name of the var
mixed $value
The value of the var
Returns
boolean
Success

_checkValid() public ¶

_checkValid( )

Helper method to create a new session.

check() public ¶

check( string $name )

Returns true if given variable is set in session.

Parameters
string $name
Variable name to check for
Returns
boolean
True if variable is there

del() public ¶

del( string $name )

Removes a variable from session.

Parameters
string $name
Session variable to remove
Returns
boolean
Success

destroy() public ¶

destroy( )

Helper method to destroy invalid sessions.

error() public ¶

error( )

Returns last occurred error as a string, if any.

Returns
mixed
Error description as a string, or false.

id() public ¶

id( CakeSession::$id $id = null )

Returns the Session id

Parameters
CakeSession::$id $id optional null
$name string
Returns
string
Session id

ignore() public ¶

ignore( mixed $var )

Tells Session to stop watching a given key path

Parameters
mixed $var
The variable path to watch

read() public ¶

read( mixed $name = null )

Returns given session variable, or all of them, if no parameters given.

Parameters
mixed $name optional null
The name of the session variable (or a path as sent to Set.extract)
Returns
mixed
The value of the session variable

renew() public ¶

renew( )

Restarts this session.

start() public ¶

start( )

Starts the Session.

Returns
boolean
True if session was started

started() public ¶

started( )

Determine if Session has been started.

Returns
boolean
True if session has been started.

valid() public ¶

valid( )

Returns true if session is valid.

Returns
boolean
Success

watch() public ¶

watch( mixed $var )

Tells Session to write a notification when a certain session path or subpath is written to

Parameters
mixed $var
The variable path to watch

write() public ¶

write( mixed $name , string $value )

Writes value to given session variable name.

Parameters
mixed $name
Name of variable
string $value
Value to write
Returns
boolean
True if the write was successful, false if the write failed

Methods inherited from Object

Object() public ¶

Object( )

A hack to support __construct() on PHP 4 Hint: descendant classes have no PHP4 class_name() constructors, so this constructor gets called first and calls the top-layer __construct() which (if present) should call parent::__construct()

Returns
Object

__openPersistent() public ¶

__openPersistent( string $name , string $type = null )

Open the persistent class file for reading Used by Object::_persist()

Parameters
string $name
Name of persisted class
string $type optional null
Type of persistance (e.g: registry)

_persist() public ¶

_persist( string $name , string $return , $object , $type = null )

Checks for a persistent class file, if found file is opened and true returned If file is not found a file is created and false returned If used in other locations of the model you should choose a unique name for the persistent file There are many uses for this method, see manual for examples

Parameters
string $name
name of the class to persist
string $return
$object the object to persist
$object
$type optional null
Returns
boolean
Success

_savePersistent() public ¶

_savePersistent( string $name , object $object )

You should choose a unique name for the persistent file

There are many uses for this method, see manual for examples

Parameters
string $name
name used for object to cache
object $object
the object to persist
Returns
boolean
true on save, throws error if file can not be created

_set() public ¶

_set( array $properties = array() )

Allows setting of multiple properties of the object in a single line of code.

Parameters
array $properties optional array()
An associative array containing properties and corresponding values.

_stop() public ¶

_stop( $status = 0 )

Stop execution of the current script

Parameters
$status optional 0
http://php.net/exit for values

cakeError() public ¶

cakeError( string $method , array $messages = array() )

Used to report user friendly errors. If there is a file app/error.php or app/app_error.php this file will be loaded error.php is the AppError class it should extend ErrorHandler class.

Parameters
string $method
Method to be called in the error class (AppError or ErrorHandler classes)
array $messages optional array()
Message that is to be displayed by the error class
Returns
error
message

dispatchMethod() public ¶

dispatchMethod( string $method , array $params = array() )

Calls a method on this object with the given parameters. Provides an OO wrapper for call_user_func_array, and improves performance by using straight method calls in most cases.

Parameters
string $method
Name of the method to call
array $params optional array()
Parameter list to use when calling $method
Returns
mixed
Returns the result of the method call

log() public ¶

log( string $msg , integer $type = LOG_ERROR )

API for logging events.

Parameters
string $msg
Log message
integer $type optional LOG_ERROR
Error type constant. Defined in app/config/core.php.
Returns
boolean
Success of log write

requestAction() public ¶

requestAction( mixed $url , array $extra = array() )

Calls a controller's method from any location.

Parameters
mixed $url
String or array-based url.
array $extra optional array()
if array includes the key "return" it sets the AutoRender to true.
Returns
mixed

Boolean true or false on success/failure, or contents of rendered action if 'return' is set in $extra.


toString() public ¶

toString( )

Object-to-string conversion. Each class can override this method as necessary.

Returns
string
The name of this class

Properties detail

$_userAgent ¶

public string

User agent string

''

$error ¶

public array

Error messages for this session

false

$host ¶

public string

Hostname

null

$id ¶

public string

Current Session id

null

$lastError ¶

public integer

Error number of last occurred error

null

$path ¶

public string

Path to where the session is active.

'/'

$security ¶

public string

'Security.level' setting, "high", "medium", or "low".

null

$sessionTime ¶

public integer

Time when this session becomes invalid.

false

$time ¶

public integer

Start time for this session.

false

$valid ¶

public boolean

True if the Session is still valid

false

$watchKeys ¶

public array

Keeps track of keys to watch for writes on

array()
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