The "$id" has to be a
new MongoId("...")
in PHP driver!
Ref:
array(
"$ref" => "other_collection",
"$id" => new MongoId("the_referenced_dataobject_id")
)
MongoCollection::getDBRef
(PECL mongo >=0.9.0)
MongoCollection::getDBRef — Fetches the document pointed to by a database reference
说明
public MongoCollection::getDBRef
( array
$ref
) : array参数
-
ref -
A database reference.
返回值
Returns the database document pointed to by the reference.
范例
Example #1 MongoCollection::getDBRef() example
<?php
$playlists = $db->playlists;
$myList = $playlists->findOne(array('username' => 'me'));
// fetch each song in the playlist
foreach ($myList['songlist'] as $songRef) {
$song = $playlists->getDBRef($songRef);
echo $song['title'] . "\n";
}
?>
以上例程的输出类似于：
Dazed and Confused Ma na ma na Bohemian Rhapsody
In the above example each $songRef looks something like the following:
Array
(
[$ref] => songs
[$id] => 49902cde5162504500b45c2c
)
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User Contributed Notes 1 note
manuel at dziubas dot de ¶
13 years ago
