pg_lo_truncate
pg_lo_truncate
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pg_lo_truncate — Truncates a large object
Description
bool pg_lo_truncate ( resource $large_object , int $size )
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. |
See Also
- pg_lo_tell() - Returns current seek position a of large object
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.pg-lo-truncate.php
