eio_custom

    (PECL eio >= 0.0.1dev)

    eio_custom — Execute custom request like any other eio_* call

    Description

    eio_custom(
        callable$execute,
        int$pri,
        callable$callback,
        mixed$data = NULL
    ): resource

    eio_custom() executes custom function specified by execute processing it just like any other eio_* call.

    Parameters

    execute

    Specifies the request function that should match the following prototype: 

     mixed execute(mixed data);
    callback is event completion callback that should match the following prototype: 
     void callback(mixed data, mixed result);
    data is the data passed to execute via data argument without modifications result value returned by execute
    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.

    Return Values

    eio_custom() returns request resource on success, or false on failure.

    Examples

    Example #1 eio_custom() example

    <?php

    function my_custom_callback($data, $result) {
    var_dump($data);
    var_dump(count($result));
    var_dump($result['data_modified']);
    var_dump($result['result']);
    }


    function my_custom($data) {
    var_dump($data);

    $result = array(
    'result' => 1001,
    'data_modified' => "my custom data",
    );

    return     $result;
    }

    $data = "my_custom_data";
    $req = eio_custom("my_custom", EIO_PRI_DEFAULT, "my_custom_callback", $data);
    var_dump($req);
    eio_event_loop();
    ?>

    The above example will output something similar to:

    resource(4) of type (EIO Request Descriptor) string(14) "my_custom_data" string(14) "my_custom_data" int(2) string(14) "my custom data" int(1001)
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