PHP: pg_lo_read - Manual

downloads | documentation | faq | getting help | mailing lists | reporting bugs | php.net sites | links | conferences | my php.net

search for in the

pg_lo_seek pg_lo_read_all

Last updated: Sat, 27 Jan 2007

view this page in

# pg_lo_read

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_read -- Read a large object

## Описание

string pg_lo_read ( resource large_object [, int len] )

pg_lo_read() reads at most `len` bytes from a large object and returns it as a string.

To use the large object interface, it is necessary to enclose it within a transaction block.

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

## Список параметров

`large_object`

  PostgreSQL large object (LOB) resource, returned by pg_lo_open().

`len`

  An optional maximum number of bytes to return. Defaults to 8192.

## Возвращаемые значения

A string containing `len` bytes from the large object, or `FALSE` on error.

## Примеры

Пример 1. pg_lo_read() example

`<?php
$doc_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $doc_oid, "r");
$data = pg_lo_read($handle, 50000);
pg_query($database, "commit");
echo $data;
?>`

## Смотрите также

pg_lo_read_all()

add a note User Contributed Notes
pg_lo_read
There are no user contributed notes for this page.
pg_lo_seek pg_lo_read_all

Last updated: Sat, 27 Jan 2007
show source | credits | stats | sitemap | contact | advertising | mirror sites
Copyright © 2001-2007 The PHP Group
All rights reserved.
This mirror generously provided by: Yahoo! Inc.
Last updated: Sat Mar 10 10:36:09 2007 PST