Рекурсивный акроним словосочетания «PHP: Hypertext Preprocessor»
Добро пожаловать на форум PHP программистов!
За последние 24 часа нас посетили 17689 программистов и 1744 робота. Сейчас ищут 1327 программистов ...
Writes
Вернуться к: Manual
Updating Nested Objects
Suppose we wish to change the name of a comment's author in this document:
{ "_id" : ObjectId("4b06c282edb87a281e09dad9"), "content" : "this is a blog post.", "comments" : [ { "author" : "Mike", "comment" : "I think that blah blah blah...", }, { "author" : "John", "comment" : "I disagree." } ] }
<?php
$blog->update($criteria, array('$set' => array("comments.1" => array("author" => "Jim"))));
?>
The Positional Operator
The positional operator $ is useful for updating objects that are in arrays. In the example above, for instance, suppose that we did not know the index of the comment that we needed to change, merely that we needed to change "John" to "Jim". We can use $ to do so.
<?php
$blog->update(
array('comments.author' => 'John'),
array('$set' => array('comments.$.author' => 'Jim')));
?>
Вернуться к: Manual