MemcacheSession Class Reference
[Memcache]

Redirect session to write to Memcache. More...

Inheritance diagram for MemcacheSession:

List of all members.

Public Member Functions
	close ()
	Close a session.
	destroy ($key)
	Delete a session.
	gc ($lifetime)
	Delete outdated sessions.
	open ($save_path, $session_name)
	Open a session.
	read ($key)
	Load session data from xcache.
	write ($key, $value)
	Write session data to XCache.
Protected Member Functions
	create_key ($key)

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Detailed Description

Redirect session to write to Memcache.

Memcache(d) extension already comes with a session handler build in, so if you want to use that, rather than this implementation, set constant APP_MEMCACHE_STORE_SESSIONS to FALSE in your config files.

Author:

Gerd Riesselmann

Definition at line 12 of file session.memcache.impl.php.

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Member Function Documentation

MemcacheSession::close

(

)

Close a session.

Implements ISessionHandler.

Definition at line 23 of file session.memcache.impl.php.

                                {
                //Note that for security reasons the Debian and Ubuntu distributions of 
                //php do not call _gc to remove old sessions, but instead run /etc/cron.d/php*, 
                //which check the value of session.gc_maxlifetime in php.ini and delete the session 
                //files in /var/lib/php*.  This is all fine, but it means if you write your own 
                //session handlers you'll need to explicitly call your _gc function yourself.  
                //A good place to do this is in your _close function
                
                // Since Memcache takes care of life time, no gc is needed
                //$this->gc(ini_get('session.gc_maxlifetime'));
                return true;
        }

MemcacheSession::create_key

(

$

key

)

[protected]

Definition at line 81 of file session.memcache.impl.php.

                                            {
                return 'g$s' . Config::get_url(Config::URL_DOMAIN) . '_' . $key;
        }       

MemcacheSession::destroy

(

$

key

)

Delete a session.

Implements ISessionHandler.

Definition at line 69 of file session.memcache.impl.php.

                                      {
                GyroMemcache::delete($this->create_key($key));
        }

MemcacheSession::gc

(

$

lifetime

)

Delete outdated sessions.

Implements ISessionHandler.

Definition at line 76 of file session.memcache.impl.php.

                                      {
                // Memcache does this for us
                return true;
        }

MemcacheSession::open	(	$	save_path,
		$	session_name
	)

Open a session.

Implements ISessionHandler.

Definition at line 16 of file session.memcache.impl.php.

                                                        {
                return true;
        }

MemcacheSession::read

(

$

key

)

Load session data from xcache.

Implements ISessionHandler.

Definition at line 39 of file session.memcache.impl.php.

                                   {
                // Write and Close handlers are called after destructing objects since PHP 5.0.5
                // Thus destructors can use sessions but session handler can't use objects.
                // So we are moving session closure before destructing objects.
                register_shutdown_function('session_write_close');
                $key = $this->create_key($key);
                
                $ret = GyroMemcache::get($key);
                if ($ret === false) {
                        $ret = '';
                }
                return $ret;
        }

MemcacheSession::write	(	$	key,
		$	value
	)

Write session data to XCache.

Implements ISessionHandler.

Definition at line 56 of file session.memcache.impl.php.

                                            {
                try {
                        GyroMemcache::set($this->create_key($key), $value, ini_get('session.gc_maxlifetime'));
                        return true;
                }
                catch(Exception $ex) {
                        return false;
                }       
        }

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The documentation for this class was generated from the following file:

• contributions/cache.memcache/session.memcache.impl.php