(PHP 5, PHP 7, 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.
成功时返回 TRUE， 或者在失败时返回 FALSE。