Руководство по PHP
Пред. |  | След.

# pg_lo_export

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_export -- Export a large object to file

## Описание

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.

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

## Список параметров

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.

## Возвращаемые значения

Возвращает `TRUE` в случае успешного завершения или `FALSE` в случае возникновения ошибки.

## Примеры

Пример 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"); ?>`

## Смотрите также

pg_lo_import()

Пред. | Начало | След.
pg_lo_create | Уровень выше | pg_lo_import