update : 2015.11.03
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Export a large object to file
PostgreSQL 함수 목록
PHP Manual

pg_lo_export

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_export — Export a large object to file

설명

bool pg_lo_export ([ resource $connection ], 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.

Note:

This function used to be called pg_loexport().

인수

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.

반환값

성공 시 TRUE를, 실패 시 FALSE를 반환합니다.

예제

Example #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");
?>

참고

PostgreSQL 함수 목록
PHP Manual