PHP Unconference Europe 2015

pg_lo_truncate

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pg_lo_truncate Truncates a large object

Descripción

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.

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($handle0);
   
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

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