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

pg_lo_importImport a large object from file


pg_lo_import(PgSql\Connection $connection = ?, string $pathname, mixed $object_id = ?): int

pg_lo_import() creates a new large object in the database using a file on the filesystem as its data source.

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


This function used to be called pg_loimport().



Uma instância de PgSql\Connection. Quando o parâmetro connection não for especificado, a conexão padrão será usada. A conexão padrão é a última conexão feita por pg_connect() ou pg_pconnect().


A partir do PHP 8.1.0, usar a conexão padrão tornou-se defasado.


The full path and file name of the file on the client filesystem from which to read the large object data.


If an object_id is given the function will try to create a large object with this id, else a free object id is assigned by the server. The parameter relies on functionality that first appeared in PostgreSQL 8.1.

Valor Retornado

The OID of the newly created large object, ou false em caso de falha.

Registro de Alterações

Versão Descrição
8.1.0 O parâmetro connection agora espera uma instância de PgSql\Connection; anteriormente, um resource era esperado.


Exemplo #1 pg_lo_import() example

= pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_import($database, '/tmp/lob.dat');
pg_query($database, "commit");

Veja Também

add a note

User Contributed Notes 4 notes

vi2 at vi2 dot com
21 years ago
its not very clear if pg_lo_import needs to have pg_lo_open called first. Because pg_lo_import handles the process of writign to the file, it seems logical that pg_lo_open does not need to be called. However due to the ugly nature of how postgres handles oid objects, it would be nice to have this documented.
yohgaki at php dot net
21 years ago
Due to a bug, OLD API does not available with PHP 4.2.0 and 4.2.1.

PHP 4.2.2 will support OLD API again and will be kept long enough.

New API will be available PHP 4.2.0 to later versions.
yohgaki at php dot net
21 years ago
Due to a bug, PHP 4.2.0 and 4.2.1 does not support pg_lo_import() old API. It's fixed in PHP 4.2.2.

BTW, new API will be always available from PHP 4.2.0 to later versions. Older API will be kept long enough, also.
ceco at noxis dot net
22 years ago
it works for me (php-4.2.1)

not like this

int pg_lo_import ( string pathname [, resource connection])

int pg_lo_import ( resource connection, string pathname )

don't know the reason
To Top