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pg_lo_write
(PHP 4 >= 4.2.0, PHP 5)
pg_lo_write — Write to a large object
Описание
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.
Замечание: This function used to be called pg_lowrite().
Список параметров
- 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 .
Возвращаемые значения
The number of bytes written to the large object, or FALSE on error.
Примеры
Пример #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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