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pg_lo_read

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

Note:

This function used to be called pg_loread().

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 1949. 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;
?>