Руководство по PHP
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# 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()

Пред. | Начало | След.
pg_lo_read_all | Уровень выше | pg_lo_seek