# pg_lo_truncate

(PHP 5 >= 5.6.0, PHP 7, PHP 8)

pg_lo_truncate — Truncates a large object

### Descripción

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.

### Parámetros

`lob`

  An PgSql\Lob instance, returned by pg_lo_open().

`size`

  The number of bytes to truncate.

### Valores devueltos

Devuelve `true` en caso de éxito o `false` en caso de error.

### Historial de cambios

Versión | Descripción
--- | ---
8.1.0 | The `lob` parameter expects an PgSql\Lob instance now; previously, a recurso was expected.

### Ejemplos

Ejemplo #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;
?>`

### Ver también

- pg_lo_tell() - Returns current seek position a of large object