PG_LO_READ(3) PG_LO_READ(3)
pg_lo_read - Read a large object
SYNOPSIS
string pg_lo_read (resource $large_object, [int $len = 8192])
DESCRIPTION
pg_lo_read(3) 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(3).
PARAMETERS
o $large_object
- PostgreSQL large object (LOB) resource, returned by pg_lo_open(3).
o $len
- An optional maximum number of bytes to return.
RETURN VALUES
A string containing $len bytes from the large object, or FALSE on error.
EXAMPLES
Example #1
pg_lo_read(3) 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;
?>
SEE ALSO
pg_lo_read_all(3).
PHP Documentation Group PG_LO_READ(3)
