(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_lo_export — 锟斤拷锟斤拷锟酵讹拷锟襟导筹拷锟斤拷锟侥硷拷
$connection
], int $oid
, string $pathname
) : boolpg_lo_export() takes a large object in a PostgreSQL database and saves its contents to a file on the local filesystem.
要使锟矫达拷锟酵讹拷锟斤拷lo锟斤拷锟接口ｏ拷锟斤拷要锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫★拷
Note:
锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷锟斤拷锟斤拷为 pg_loexport()锟斤拷
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要锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷拇锟斤拷投锟斤拷锟斤拷 OID锟斤拷
pathname要锟斤拷锟斤拷锟斤拷锟斤拷锟捷匡拷锟斤拷拇锟斤拷投锟斤拷锟斤拷锟侥硷拷锟节客伙拷锟斤拷锟斤拷锟斤拷锟斤拷路锟斤拷锟斤拷锟侥硷拷锟斤拷锟斤拷
锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷
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");
?>