pg_lo_export
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_export — Export a large object to file
Descripción
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
connectionis unspecified, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().AdvertenciaAs 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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