(PHP 3 >= 3.0.7, PHP 4, PHP 5)
( resource blob_handle )
This function closes a BLOB that has either been opened for reading by
ibase_open_blob() or has been opened for writing by
ibase_create_blob(). If the BLOB was being read, this function
returns TRUE on success, if the BLOB was being written to, this function
returns a string containing the BLOB id that has been assigned to it by the database.
On failure, this function returns FALSE.