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    eio_cancel

    (PECL eio >= 0.0.1dev)

    eio_cancel — Cancels a request

    Descrizione

    eio_cancel(resource $req): void

    eio_cancel() cancels a request specified by req

    Elenco dei parametri

    req

    The request resource

    pri

    The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or null. If null passed, pri internally is set to EIO_PRI_DEFAULT.

    callback

    callback function is called when the request is done. It should match the following prototype:

    void callback(mixed $data, int $result[, resource $req]);
    data

    is custom data passed to the request.

    result

    request-specific result value; basically, the value returned by corresponding system call.

    req

    is optional request resource which can be used with functions like eio_get_last_error()

    data

    Arbitrary variable passed to callback.

    Valori restituiti

    Nessun valore viene restituito.

    Esempi

    Example #1 eio_cancel() example

    <?php
    /* Is called when eio_nop() finished */
    function my_nop_cb($data, $result) {
    echo     "my_nop ", $data, "\n";
    }

    // This eio_nop() call will be cancelled
    $req = eio_nop(EIO_PRI_DEFAULT, "my_nop_cb", "1");
    var_dump($req);
    eio_cancel($req);

    // This time eio_nop() will be processed
    eio_nop(EIO_PRI_DEFAULT, "my_nop_cb", "2");

    // Process requests
    eio_event_loop();
    ?>

    Il precedente esempio visualizzerà qualcosa simile a:

    resource(4) of type (EIO Request Descriptor)
my_nop 2

    Vedere anche:

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