pg_lo_write
(PHP 4 >= 4.2.0, PHP 5)
pg_lo_write -- Write to a large object
Description
int
pg_lo_write ( resource large_object, string data [, int len] )
pg_lo_write() writes data into a large object
at the current seek position.
To use the large object interface, it is necessary to
enclose it within a transaction block.
Note:
This function used to be called pg_lowrite().
Parameters
- large_object
PostgreSQL large object (LOB) resource, returned by pg_lo_open().
- data
The data to be written to the large object. If len is
specified and is less than the length of data, only
len bytes will be written.
- len
An optional maximum number of bytes to write. Must be greater than zero
and no greater than the length of data. Defaults to
the length of data.
Return Values
The number of bytes written to the large object, or FALSE on error.
Examples
Example 1. pg_lo_write() example
<?php
$doc_oid = 189762345;
$data = "This will overwrite the start of the large object.";
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $doc_oid, "w");
$data = pg_lo_write($handle, $data);
pg_query($database, "commit");
?>
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