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(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().



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().


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


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.

Valores devueltos

The OID of the newly created large object, 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.


Ejemplo #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");

Ver también

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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
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