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(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_write — Write to a large object
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.
Nota:
This function used to be called pg_lowrite().
lob
An PgSql\Lob instance, returned by pg_lo_open().
data
The data to be written to the large object. If length
is
an int and is less than the length of data
, only
length
bytes will be written.
length
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.
Versión | Descripción |
---|---|
8.1.0 |
The lob parameter expects an PgSql\Lob
instance now; previously, a recurso was expected.
|
8.0.0 |
length is now nullable.
|
Ejemplo #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");
?>