(PECL mongo >=0.9.0)
MongoGridFS::storeFile — Stores a file in the database
$filename
   [, array $extra = array()
   [, array $options = array()
  ]] )
filename
    The name of the file.
extra
    Other metadata to add to the file saved.
options
    Options for the store.
"safe"
Check that this store succeeded.
Returns the _id of the saved object.
Throws MongoCursorException if the "safe" option is set and the insert fails.