mongocursorinterface(3) [php man page]

MONGOCURSORINTERFACE(3) 						 1						   MONGOCURSORINTERFACE(3)

The MongoCursorInterface interface

INTRODUCTION

	Interface  for	cursors, which can be used to iterate through results of a database query or command. This interface is implemented by the
       MongoCursor and MongoCommandCursor classes.

       Note

	       Similar to Traversable, this interface cannot be implemented in PHP scripts.

CLASS SYNOPSIS

       MongoCursorInterface

       MongoCursorInterfaceextends
       Iterator

       Methods

       o abstractpublic MongoCursorInterface MongoCursorInterface::batchSize (int  $batchSize)

       o abstractpublic bool MongoCursorInterface::dead (void  )

       o abstractpublic array MongoCursorInterface::getReadPreference (void  )

       o abstractpublic array MongoCursorInterface::info (void	)

       o abstractpublic MongoCursorInterface MongoCursorInterface::setReadPreference (string  $read_preference, [array	$tags])

       o abstractpublic MongoCursorInterface MongoCursorInterface::timeout (int  $ms)

       Inherited methods

       o abstractpublic mixed Iterator::current (void  )

       o abstractpublic scalar Iterator::key (void  )

       o abstractpublic void Iterator::next (void  )

       o abstractpublic void Iterator::rewind (void  )

       o abstractpublic boolean Iterator::valid (void  )

PHP Documentation Group 												   MONGOCURSORINTERFACE(3)

SESSIONHANDLERINTERFACE(3)						 1						SESSIONHANDLERINTERFACE(3)

The SessionHandlerInterface class

INTRODUCTION

       SessionHandlerInterface	is an interface which defines a prototype for creating a custom session handler. In order to pass a custom session
       handler to session_set_save_handler(3) using its OOP invocation, the class must implement this interface.

	Please note the callback methods of this class are designed to be called internally by PHP and are not meant to be called from	user-space
       code.

CLASS SYNOPSIS

       SessionHandlerInterface

       SessionHandlerInterface

       Methods

       o abstractpublic bool SessionHandlerInterface::close (void  )

       o abstractpublic bool SessionHandlerInterface::destroy (string  $session_id)

       o abstractpublic bool SessionHandlerInterface::gc (string  $maxlifetime)

       o abstractpublic bool SessionHandlerInterface::open (string  $save_path, string	$name)

       o abstractpublic string SessionHandlerInterface::read (string  $session_id)

       o abstractpublic bool SessionHandlerInterface::write (string  $session_id, string  $session_data)

       Example #1

	       Example using SessionHandlerInterface

	       The  following  example	provides  file based session storage similar to the PHP sessions default save handler $files. This example
	      could easily be extended to cover database storage using your favorite PHP supported database engine.

	       Note we use the OOP prototype with session_set_save_handler(3) and register the shutdown function using	the  function's  parameter
	      flag. This is generally advised when registering objects as session save handlers.

	      <?php
	      class MySessionHandler implements SessionHandlerInterface
	      {
		  private $savePath;

		  public function open($savePath, $sessionName)
		  {
		      $this->savePath = $savePath;
		      if (!is_dir($this->savePath)) {
			  mkdir($this->savePath, 0777);
		      }

		      return true;
		  }

		  public function close()
		  {
		      return true;
		  }

		  public function read($id)
		  {
		      return (string)@file_get_contents("$this->savePath/sess_$id");
		  }

		  public function write($id, $data)
		  {
		      return file_put_contents("$this->savePath/sess_$id", $data) === false ? false : true;
		  }

		  public function destroy($id)
		  {
		      $file = "$this->savePath/sess_$id";
		      if (file_exists($file)) {
			  unlink($file);
		      }

		      return true;
		  }

		  public function gc($maxlifetime)
		  {
		      foreach (glob("$this->savePath/sess_*") as $file) {
			  if (filemtime($file) + $maxlifetime < time() && file_exists($file)) {
			      unlink($file);
			  }
		      }

		      return true;
		  }
	      }

	      $handler = new MySessionHandler();
	      session_set_save_handler($handler, true);
	      session_start();

	      // proceed to set and retrieve values by key from $_SESSION

PHP Documentation Group 												SESSIONHANDLERINTERFACE(3)