(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_import — 將文件導入為大型對象
pg_lo_import() creates a new large object in the database using a file on the filesystem as its data source.
要使用大型對象（lo）接口，需要將其放置在事務(wù)塊中。
注意:
本函數以前的名字為 pg_loimport()。
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().
pathname變量指明了要導入為大型對象的文件名。
object_id
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
was added in PHP 5.3 and relies on functionality that first
appeared in PostgreSQL 8.1.
導入成功則返回新建的大型對象的 OID，如果出錯則返回 false。
示例 #1 pg_lo_import() 例子
<?php
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_import($database, '/tmp/lob.dat');
pg_query($database, "commit");
?>