pg_lo_truncate

(PHP 5 >= 5.6.0, PHP 7)

pg_lo_truncate — Truncates a large object

Descripción

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.

Parámetros

large_object

PostgreSQL large object (LOB) resource, 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.

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;
?>

Historial de cambios

Versión Descripción
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.

Ver también

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