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(PHP 4 >= 4.2.0, PHP 5)

pg_lo_read -- Read a large object

Description

string pg_lo_read ( resource large_object [, int len] )

pg_lo_read() reads at most len bytes from a large object and returns it as a string .

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

Parameters

large_object

PostgreSQL large object (LOB) resource, returned by pg_lo_open() .

len

An optional maximum number of bytes to return. Defaults to 8192.

Return Values

A string containing len bytes from the large object, or FALSE on error.

Examples

Example 1. pg_lo_read() example

<?php
   $doc_oid = 189762345;
   $database = pg_connect("dbname=jacarta");
   pg_query($database, "begin");
   $handle = pg_lo_open($database, $doc_oid, "r");
   $data = pg_lo_read($handle, 50000);
   pg_query($database, "commit");
   echo $data;
?>

Related Function(s)

pg_lo_open()

pg_lo_read_all()