php man page for mongomaxkey

MONGOMAXKEY(3)								 1							    MONGOMAXKEY(3)

The MongoMaxKey class

INTRODUCTION
       MongoMaxKey  is	an special type used by the database that compares greater than all other possible BSON values. Thus, if a query is sorted
       by a given field in ascending order, any document with a MongoMaxKey as its value will be returned last.

       MongoMaxKey has no associated fields, methods, or constants. It is merely the "greatest" value that can be represented in the database.

       Note

	      MongoMaxKey is used internally by MongoDB for indexing and sharding. There is generally no reason to use this class in  an  applica-
	      tion.

CLASS SYNOPSIS
       MongoMaxKey

       MongoMaxKey

USING  MongoMaxKey"; AS A VALUE"
       <?php

       $collection->insert(array("task" => "dishes", "doBy" => new MongoMaxKey));
       $collection->insert(array("task" => "staff meeting", "doBy" => new MongoDate(strtotime("+4 days"))));

       $cursor = $collection->find()->sort(array("doBy" => 1));

       ?>

	The  cursor  will  return  the	staff  meeting document followed by the dishes document. The dishes document will always be returned last,
       regardless of what else is added to the collection (unless other documents are added with MongoMaxKey in their "doBy" field).  See Also

	      oMongoMinKey

PHP Documentation Group 													    MONGOMAXKEY(3)