(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_unlink — 删除一个大型对象
$connection, int $oid): bool
pg_lo_unlink() 删除由 oid 指定的大型对象。成功时返回 true， 或者在失败时返回 false。
要使用大型对象（lo）接口，需要将其放置在事务块中。
注意:
本函数以前的名字为
pg_lo_unlink()。
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().
oidThe OID of the large object in the database.
成功时返回 true， 或者在失败时返回 false。
示例 #1 pg_lo_unlink() example
<?php
// OID of the large object to delete
$doc_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
pg_lo_unlink($database, $doc_oid);
pg_query($database, "commit");
?>