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POPHP: Open a new window in new session (Solution Correct?)
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copied!<p>Since i have not found any significant solution for open a new session for a new window/tab, i have thought for the follow solution that seems to work:</p> <p>1- created a like singleton Class 'SubSession'</p> <pre><code><?php /** * Provides a data structure and routines to be able to create and/or * activate a subSession * @author Roberto CASULA (casual4free@gmail.com) */ final class SubSession { private static $instance = NULL; private $current_active_name = 'MAIN'; private $SESSIONSTORE = array(); private $MAIN_SESSION; private function currentSessionStore() { $active_name = $this->current_active_name; $this->SESSIONSTORE[$active_name] = $_SESSION; } private function mainSessionStore() { $active_name = $this->current_active_name; if($active_name !== 'MAIN') throw new BadMethodCallException(__CLASS__.': the current active subSession is not MAIN'); $this->MAIN_SESSION = $_SESSION; } public function exists($name) { return array_key_exists($name, $this->SESSIONSTORE); } public function forkActive($name) { if( $this->exists($name) ) throw new InvalidArgumentException(__CLASS__.": $name yet exists"); $this->SESSIONSTORE[$name] = $_SESSION; } public function activate($name) { $active_name = $this->current_active_name; if($name === $active_name) return 'yet_active'; if($name == 'MAIN') : $this->currentSessionStore(); $_SESSION = $this->MAIN_SESSION; $this->current_active_name = $name; return TRUE; elseif( $this->exists($name) ) : $this->mainSessionStore(); $_SESSION = $this->SESSIONSTORE[$name]; $this->current_active_name = $name; return TRUE; else : throw new InvalidArgumentException('The searched name do not exists: '.$name); endif; } public function __get($name) { switch ($name) { case 'MAIN_SESSION' : if($this->current_active_name === 'MAIN') return $_SESSION; default : return $$name; } } private function __construct() {} public function __wakeup() {} public function __sleep() { return array('SESSIONSTORE'); } public function __destruct() { $this->activate('MAIN'); $_SESSION[__CLASS__] = serialize($this); } /** * * @return SubSession */ public static function getInstance() { if( self::$instance !== NULL) : return self::$instance; elseif( isset($_SESSION[__CLASS__]) ) : return self::$instance = unserialize($_SESSION[__CLASS__]); else : return self::$instance = new self(); endif; } } </code></pre> <p>2- added the follow line after "session_start();"</p> <pre><code>$__SUB_SESSION = SubSession::getInstance(); if( isset($_GET['sub_session_id']) ) { $subSessID = $_GET['sub_session_id']; if( !$__SUB_SESSION->exists($subSessID) ) $__SUB_SESSION->forkActive($subSessID); $__SUB_SESSION->activate($subSessID); } </code></pre> <p>3- created an entry in the .htaccess</p> <pre><code>RewriteRule ^@sub_session_id=([^/]+)(.*)$ $2?sub_session_id=$1 [QSA] </code></pre> <p>Now: <ol> <li>Since i'am serializing n copies of a <code>$_SESSION</code> array (in the <code>[SubSession->]$SESSIONSTORE</code> array) and <br/> knowing that <code>$_SESSION</code> array is serialized and unserialize using a different method,<br/> There could be some problems when i unserialize them ? <br/><br/></li> <li>Since i dont say in what order php calls the the <code>__destruct()</code> methods at the end of the script<br/> how can I be sure that this class will be the last destroyed? <br/> (this could prevent that some other self-serializing¹ will be stored on the 'MAIN' $_SESSION when a subsession² is active. </ol></p> <p>1: I use the words self-serialing to mean a class which serialize itself somewhere in the $_SESSION array before being destructed 2: I intend a subsession a session with the $_SESSION array copied from a position in the <code>[SubSession->]$SESSIONSTORE</code>, created by <code>$__SUB_SESSION->forkActive($subSessID);</code> and activated by <code>$__SUB_SESSION->activate($subSessID);</code></p>

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