pg_lo_write Write a large object intpg_lo_write resourcelarge_object stringdata intlen pg_lo_write writes at most to a large object from a variable data and returns the number of bytes actually written, or &false; in the case of an error. large_object is a large object resource from pg_lo_open. To use the large object (lo) interface, it is necessary to enclose it within a transaction block. This function used to be called pg_lowrite(). See also pg_lo_create and pg_lo_open.