(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.
Note:
This function used to be called pg_lowrite().
lobAn 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.
| Version | Description |
|---|---|
| 8.1.0 |
The lob parameter expects an PgSql\Lob
instance now; previously, a resource was expected.
|
| 8.0.0 |
length is now nullable.
|
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");
?>