pg_lo_unlink()

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

删除一个大型对象

说明

pg_lo_unlink(resource $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。

Note:
本函数以前的名字为pg_lo_unlink()。

参数

$connection: PostgreSQL database connection resource. When$connectionis not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
$oid: TheOIDof the large object in the database.

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Example #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");
?>

参见

pg_lo_create()新建一个大型对象
pg_lo_import()将文件导入为大型对象

This function used to be called pg_lounlink() and not pg_lo_unlink()