pg_lo_import
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_lo_import — 将文件导入为大型对象
说明
pg_lo_import() creates a new large object in the database using a file on the filesystem as its data source.
要使用大型对象（lo）接口，需要将其放置在事务块中。
Note: 当启用 安全模式时， PHP 会检查被操作的文件或目录是否与被执行的脚本有相同的 UID（所有者）。
Note:
本函数以前的名字为 pg_loimport()。
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(). -
pathname -
变量指明了要导入为大型对象的文件名。
-
object_id -
If an
object_idis 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.
返回值
导入成功则返回新建的大型对象的 OID，如果出错则返回 FALSE。
更新日志
| 版本 | 说明 |
|---|---|
| 5.3.0 | The optional |
| 4.2.0 | 在 PHP 4.2.0 版本之前，本函数语法不一样，见如下定义：
pg_lo_import (
string $pathname [,
resource $connection ] ) :
int
|
范例
Example #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");
?>
