(PHP 5, PECL OCI8 >= 1.1.0)
OCI-Lob::export — Exports LOB's contents to a file
$filename
   [, int $start
   [, int $length
  ]] )Exports LOB contents to a file.
filenamePath to the file.
startIndicates from where to start exporting.
lengthIndicates the length of data to be exported.
   Returns TRUE on success or FALSE on failure.