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This document uses PHP Chinese website manual Release
(PECL mongo >=0.9.0)
MongoGridFS::findOne — Returns a single file matching the criteria
$query
= array()
[, mixed $fields
= array()
]] )
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 ))