Forum und email
pg_lo_write
Manuál PHP
PředcházejícíDalší

pg_lo_write

(PHP 4 >= 4.2.0, PHP 5)

pg_lo_write -- Write to a large object

Popis

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.

Poznámka: This function used to be called pg_lowrite().

Seznam parametrů

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.

Návratové hodnoty

The number of bytes written to the large object, or FALSE on error.

Příklady

Příklad 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");
?>

Viz také

pg_lo_create()
pg_lo_open()

PředcházejícíDomůDalší
pg_lo_unlinkNahoru