(PECL mongo >=0.9.0)
MongoGridFS::findOne — Returns a single file matching the criteria
$query = array()
[, mixed $fields = array()
]] ) : MongoGridFSFile
query
The filename or criteria for which to search.
Returns a MongoGridFSFile or NULL.
Example #1 MongoGridFS::findOne() example
Example demonstrating how to find a single file from the MongoGridFS.
<?php
$downloads = $mongo->my_db->getGridFS('downloads');
$downloads->storeFile('filename.tgz');
$download = $downloads->findOne('filename.tgz'); // instance of MongoGridFSFile
print_r($download);
?>
See MongoGridFSFile for more information about how to work with files.
以上例程的输出类似于：
MongoGridFSFile Object
(
[file] => Array
(
[_id] => MongoId Object
(
)
[filename] => filename.tgz
[uploadDate] => MongoDate Object
(
[sec] => 1274288014
[usec] => 467000
)
[chunkSize] => 262144
[md5] => d41d8cd98f00b204e9800998ecf8427e
)
[gridfs:protected] => MongoGridFS Object
(
[chunks] => MongoCollection Object
(
)
[filesName:protected] => downloads.files
[chunksName:protected] => downloads.chunks
)
)