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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.
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.
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
OIDof the large object in the database.- mode
Can be either "r" for read-only, "w" for write only or "rw" for read and write.
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");
?>
| pg_lo_close() |
| pg_lo_create() |