Php/docs/function.pg-lo-truncate
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pg_lo_truncate
(PHP 5 >= 5.6.0, PHP 7)
pg_lo_truncate — Truncates a large object
Description
pg_lo_truncate
( resource $large_object
, int $size
) : bool
pg_lo_truncate() truncates a large object resource.
To use the large object interface, it is necessary to enclose it within a transaction block.
Parameters
large_object- PostgreSQL large object (LOB) resource, returned by pg_lo_open().
size- The number of bytes to truncate.
Return Values
Returns TRUE on success or FALSE on failure.
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;?>
Changelog
| Version | Description |
|---|---|
| 5.6.0 | Added truncate function. It supports PostgreSQL 9.3's 64bit large object. Both client and server must
support PostgreSQL 9.3 and PHP must be 64bit build to use 64bit large object. |
