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pg_lo_open

Open a large object (PHP 4 >= 4.2.0, PHP 5)
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().

Parameters

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.

Return Values

A large object resource or FALSE on error.

Examples

Example 1947. 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");
?>