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    eio_grp

    (PECL eio >= 0.0.1dev)

    eio_grp — Creates a request group

    Açıklama

    eio_grp(callable $callback, string $data = NULL): resource

    eio_grp() creates a request group.

    Bağımsız Değişkenler

    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.

    Dönen Değerler

    eio_grp() returns request group resource on success, başarısızlık durumunda false döner.

    Örnekler

    Örnek 1 eio_grp() example

    <?php
    $temp_filename     = dirname(__FILE__) ."/eio-file.tmp";
    $fp = fopen($temp_filename, "w");
    fwrite($fp, "some data");
    fclose($fp);
    $my_file_fd = NULL;

    /* Is called when the group requests are done */
    function my_grp_done($data, $result) {
    // Remove the file, if it still exists
    @unlink($data);
    }

    /* Is called when the temporary file is opened */
    function my_grp_file_opened_callback($data, $result) {
    global     $my_file_fd, $grp;

    $my_file_fd = $result;

    $req = eio_read($my_file_fd, 4, 0,
    EIO_PRI_DEFAULT, "my_grp_file_read_callback");
    eio_grp_add($grp, $req);
    }

    /* Is called when the file is read */
    function my_grp_file_read_callback($data, $result) {
    global     $my_file_fd, $grp;

    var_dump($result);

    // Create request to close the file
    $req = eio_close($my_file_fd);

    // Add request to the group
    eio_grp_add($grp, $req);
    }

    // Create request group
    $grp = eio_grp("my_grp_done", $temp_filename);

    // Create request
    $req = eio_open($temp_filename, EIO_O_RDWR | EIO_O_APPEND , NULL,
    EIO_PRI_DEFAULT, "my_grp_file_opened_callback", NULL);

    // Add request to the group
    eio_grp_add($grp, $req);

    // Process requests
    eio_event_loop();
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    string(4) "some"

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