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()