PHP 8.2.0 Alpha 2 available for testing

pg_lo_export

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_lo_exportExport a large object to file

Descripción

pg_lo_export(PgSql\Connection $connection = ?, int $oid, string $pathname): bool

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.

Nota:

This function used to be called pg_loexport().

Parámetros

connection

An PgSql\Connection instance. When connection is unspecified, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

Advertencia

As of PHP 8.1.0, using the default connection is deprecated.

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.

Valores devueltos

Devuelve true en caso de éxito o false en caso de error.

Historial de cambios

Versión Descripción
8.1.0 The connection parameter expects an PgSql\Connection instance now; previously, a recurso was expected.

Ejemplos

Ejemplo #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");
?>

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