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pg_lo_truncate

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

pg_lo_truncate — Truncates a large object

Description

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.

Parameters

lob: An PgSql\Lob instance, returned by pg_lo_open().
size: The number of bytes to truncate.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.1.0	The `lob` parameter expects an PgSql\Lob instance now; previously, a resource was expected.

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;
?>

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