pg_lo_write

    (PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

    pg_lo_write — Write to a large object

    Descripción

    pg_lo_write(PgSql\Lob$lob, string$data, ?int$length = null): int|false

    pg_lo_write() writes data into a large object at the current seek position.

    To use the large object interface, it is necessary to enclose it within a transaction block.

    Nota:

    This function used to be called pg_lowrite().

    Parámetros

    lob

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

    data

    The data to be written to the large object. If length is an int and is less than the length of data, only length bytes will be written.

    length

    An optional maximum number of bytes to write. Must be greater than zero and no greater than the length of data. Defaults to the length of data.

    Valores devueltos

    The number of bytes written to the large object, or false on error.

    Historial de cambios

    VersiónDescripción
    8.1.0 The lob parameter expects an PgSql\Lob instance now; previously, a recurso was expected.
    8.0.0length is now nullable.

    Ejemplos

    Ejemplo #1 pg_lo_write() example

    <?php
    $doc_oid     = 189762345;
    $data = "This will overwrite the start of the large object.";
    $database = pg_connect("dbname=jacarta");
    pg_query($database, "begin");
    $handle = pg_lo_open($database, $doc_oid, "w");
    $data = pg_lo_write($handle, $data);
    pg_query($database, "commit");
    ?>

    Ver también

    To Top