PHP kézikönyv
Előző |  | Következő

# pg_lo_export

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_export -- Export a large object to file

## Leírás

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.

> Megjegyzés: This function used to be called pg_loexport().

## Paraméterek

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.

## Visszatérési értékek

Siker esetén `TRUE` értékkel tér vissza, ellenkező esetben `FALSE` értéket ad.

## Példák

Példa 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"); ?>`

## Lásd még

pg_lo_import()

Előző | Tartalom | Következő
pg_lo_create | Fel | pg_lo_import