pg_lo_export
(PHP 4 >= 4.2.0, PHP 5)
pg_lo_export -- Export a large object to file
Description
bool
pg_lo_export ( resource connection, int oid, string pathname )
bool
pg_lo_export ( int oid, string pathname )
pg_lo_export() takes a large object in a
PostgreSQL database and saves its contents to a file on the local
filesystem.
To use the large object interface, it is necessary to
enclose it within a transaction block.
Óçìåßùóç:
This function used to be called pg_loexport().
Parameters
- connection
PostgreSQL database connection resource. When
connection is not present, the default connection
is used. The default connection is the last connection made by
pg_connect() or pg_pconnect().
- oid
The OID of the large object in the database.
- pathname
The full path and file name of the file in which to write the
large object on the client filesystem.
Return Values
Επιστρέφει TRUE σε επιτυχία ή FALSE σε αποτυχία.
Παραδείγματα
ÐáñÜäåéãìá 1. pg_lo_export() example
<?php $database = pg_connect("dbname=jacarta"); pg_query($database, "begin"); $oid = pg_lo_create($database); $handle = pg_lo_open($database, $oid, "w"); pg_lo_write($handle, "large object data"); pg_lo_close($handle); pg_lo_export($database, $oid, '/tmp/lob.dat'); pg_query($database, "commit"); ?>
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