(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
OCI-Lob::read — Reads part of the large object
$length
) : string
Reads length bytes from the current position of
LOB's internal pointer.
Reading stops when length bytes have been read or
end of the large object is reached. Internal pointer of the large object
will be shifted on the amount of bytes read.
lengthThe length of data to read, in bytes. Large values will be rounded down to 1 MB.
Returns the contents as a string, 或者在失败时返回 FALSE.