(PHP 5)
ibase_blob_open — Open blob for retrieving data parts
$link_identifier
   , string $blob_id
   )$blob_id
   )Opens an existing BLOB for reading.
link_identifierAn InterBase link identifier. If omitted, the last opened link is assumed.
blob_idA BLOB id.
   Returns a BLOB handle for later use with 
   ibase_blob_get() or FALSE on failure.