PHP Unconference Europe 2015

pg_lo_open

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_open打开一个大型对象

说明

resource pg_lo_open ( resource $connection , int $oid , string $mode )

pg_lo_open() 打开一个大型对象并返回大型对象资源号。该资源号内封装了连接号。oid 指定了有效的大型对象的 oid,mode 可以为 "r","w" 或者 "rw"。如果失败则返回 FALSE

Warning

在关闭大型对象资源之前不要关闭数据库连接。

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_loopen()

参见 pg_lo_close()pg_lo_create()

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User Contributed Notes 1 note

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metator at netcabo dot pt
9 years ago
Just for the record, a user must be a superuser (database owner) in order to invoke pg_lo_open() (though pg_lo_create() may be invoked...). This opens a gigantic security hole in the db. If a user is not a superuser, db will raise an error with message "Can't create Large Object.".
Thus, imho, one should use pg_escape_bytea() instead.
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