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Описание

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.

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() - Import a large object from file