php 한글 메뉴얼 도움말 검색 사이트 Open a large object [function.pg-lo-open]

설명

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

pg_lo_open() opens a large object in the database and returns large object resource so that it can be manipulated.

Warning

Do not close the database connection before closing the large object resource.

To use the large object interface, it is necessary to enclose it within a transaction block.

Note:
This function used to be called pg_loopen().

인수

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().
oid: The OID of the large object in the database.
mode: Can be either "r" for read-only, "w" for write only or "rw" for read and write.

반환값

A large object resource or FALSE on error.

예제

Example #1 pg_lo_open() example


<?php
   $database = pg_connect("dbname=jacarta");
   pg_query($database, "begin");
   $oid = pg_lo_create($database);
   echo "$oid\n";
   $handle = pg_lo_open($database, $oid, "w");
   echo "$handle\n";
   pg_lo_write($handle, "large object data");
   pg_lo_close($handle);
   pg_query($database, "commit");
?>

참고

pg_lo_close() - Close a large object
pg_lo_create() - Create a large object