(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_lo_write — Write to a large object
$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.
Notă:
This function used to be called pg_lowrite().
large_objectPostgreSQL 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.
The number of bytes written to the large object, or FALSE on error.
Example #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");
?>