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pg_lo_open

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pg_lo_open

(PHP 4 >= 4.2.0, PHP 5)pg_lo_open -- Open a large object

Описание

resource pg_lo_open (resource connection, int oid, string mode)

- pg_lo_open() opens a large object in the database

and returns large object resource so that it can be manipulated.

Внимание

- Do not close the database connection before closing the large

object resource.

- To use the large object interface, it is necessary to

enclose it within a transaction block.

Замечание:

This function used to be called pg_loopen().

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.

mode

- Can be either "r" for read-only, "w" for write only or "rw" for read and

write.

Возвращаемые значения

- A large object resource or FALSE on error.

Примеры

-

Пример 1. pg_lo_open() example

<?php

$database = pg_connect("dbname=jacarta");

pg_query($database, "begin");

$oid = pg_lo_create($database);

echo "$oid\n";

$handle = pg_lo_open($database, $oid, "w");

echo "$handle\n";

pg_lo_write($handle, "large object data");

pg_lo_close($handle);

pg_query($database, "commit");

?>

Смотрите также

-

pg_lo_close()
pg_lo_create()

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pg_lo_import

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