(PHP 5, PECL OCI8 >= 1.1.0)
OCI-Lob::write — Writes data to the large object
$data
   [, int $length
  ] )
   Writes data from the parameter data into the
   current position of LOB's internal pointer.
  
dataThe data to write in the LOB.
length
       If this parameter is given, writing will stop after 
       length bytes have been written or the end of
       data is reached, whichever comes first.
      
   Returns the number of bytes written  or FALSE on failure.