PHP kézikönyv
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# pg_lo_open

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_open -- Open a large object

## Leírás

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.

Figyelem
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.

> Megjegyzés: This function used to be called pg_loopen().

## Paraméterek

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.

## Visszatérési értékek

A large object resource or `FALSE` on error.

## Példák

Példa 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"); ?>`

## Lásd még

pg_lo_close()
pg_lo_create()

Előző | Tartalom | Következő
pg_lo_import | Fel | pg_lo_read_all