pg_lo_import() creates a new large object in the database using a file on the filesystem as its data source.
To use the large object interface, it is necessary to enclose it within a transaction block.
When safe mode is enabled, PHP checks whether the files or directories you are about to operate on have the same UID (owner) as the script that is being executed.
This function used to be called pg_loimport().
The full path and file name of the file on the client filesystem from which to read the large object data.
$database = pg_connect("dbname=jacarta");
$oid = pg_lo_import($database, '/tmp/lob.dat');