pg_lo_truncate
(PHP 5 >= 5.6.0, PHP 7, PHP 8)
pg_lo_truncate — Truncates a large object
Description
pg_lo_truncate(PgSql\Lob $lob, int $size): bool
pg_lo_truncate() truncates an PgSql\Lob instance.
To use the large object interface, it is necessary to enclose it within a transaction block.
Parameters
-
lob
-
An PgSql\Lob instance, returned by pg_lo_open().
-
size
-
The number of bytes to truncate.
Return Values
Returns true
on success or false
on failure.
Changelog
Version | Description |
---|---|
8.1.0 | The lob parameter expects an PgSql\Lob instance now; previously, a resource was expected. |
Examples
Example #1 pg_lo_truncate() example
<?php $doc_oid = 189762345; $database = pg_connect("dbname=jacarta"); pg_query($database, "begin"); $handle = pg_lo_open($database, $doc_oid, "r"); // Truncate to 0 pg_lo_truncate($handle, 0); pg_query($database, "commit"); echo $data; ?>
See Also
- pg_lo_tell() - Returns current seek position a of large object
© 1997–2021 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.pg-lo-truncate.php