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    pg_lo_truncate

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

    pg_lo_truncate — Truncates a large object

    Descrizione

    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.

    Elenco dei parametri

    lob

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

    size

    The number of bytes to truncate.

    Valori restituiti

    Restituisce true in caso di successo, false in caso di fallimento.

    Log delle modifiche

    Versione Descrizione
    8.1.0 The lob parameter expects an PgSql\Lob instance now; previously, a resource was expected.

    Esempi

    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;
    ?>

    Vedere anche:

    • pg_lo_tell() - Restituisce la posizione attuale in un large object

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