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    pg_lo_truncate

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

    pg_lo_truncate — Truncates a large object

    Beschreibung

    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.

    Parameter-Liste

    large_object

    PostgreSQL large object (LOB) resource, returned by pg_lo_open().

    size

    The number of bytes to truncate.

    Rückgabewerte

    Gibt bei Erfolg true zurück. Im Fehlerfall wird false zurückgegeben.

    Beispiele

    Beispiel #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;
    ?>

    Siehe auch

    • pg_lo_tell() - Liefert die aktuelle Lese- oder Schreibposition in einem Large Object

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