(PHP 5 >= 5.6.0, PHP 7)
pg_lo_truncate — Truncates a large object
$large_object
, int $size
) : boolpg_lo_truncate() truncates a large object resource.
To use the large object interface, it is necessary to enclose it within a transaction block.
large_objectPostgreSQL large object (LOB) resource, returned by pg_lo_open().
sizeThe number of bytes to truncate.
成功した場合に TRUE を、失敗した場合に FALSE を返します。
例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;
?>
| バージョン | 説明 |
|---|---|
| 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. |