pg_lo_createpg_lo_export
(PHP 4 >= 4.2.0, PHP 5)
pg_lo_export — Export a large object to file
Описание
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.
Забележка: This function used to be called pg_loexport().
Параметри
- 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.
- pathname
-
The full path and file name of the file in which to write the large object on the client filesystem.
Връщани стойности
Връща TRUE при успех или FALSE при неуспех.
Примери
Example #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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