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pg_lo_read (PHP 4 >= 4.2.0, PHP 5) pg_lo_read -- Read a large object Описаниеstring 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.
Замечание:
This function used to be called pg_loread().
Список параметров
- large_object
PostgreSQL large object (LOB) resource, returned by pg_lo_open().
- len
An optional maximum number of bytes to return. Defaults to 8192.
Возвращаемые значения
A string containing len bytes from the
large object, or FALSE on error.
Примеры
Пример 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;
?>
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pg_lo_read
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pg_lo_read_all