pg_lo_read_all --
Reads an entire large object and send straight to browser
Description
int pg_lo_read_all ( resource large_object )
pg_lo_read_all() reads a large object and passes
it straight through to the browser after sending all pending
headers. Mainly intended for sending binary data like images or
sound. It returns number of bytes read. It returns FALSE, if an
error occurred.
To use the large object (lo) interface, it is necessary to
enclose it within a transaction block.
Note:
This function used to be called pg_loreadall().
