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    eio_custom

    (PECL eio >= 0.0.1dev)

    eio_custom — Execute custom request like any other eio_* call

    说明

    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.

    参数

    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

    请求的优先级：EIO_PRI_DEFAULT，EIO_PRI_MIN，EIO_PRI_MAX 或 null。如果是 null，pri 将设为 EIO_PRI_DEFAULT。

    callback

    callback 函数在请求完成时被调用。其应匹配一下原型：

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

    传递给请求的用户数据。

    result

    针对请求的结果的值。通常是相应的系统调用返回的值。

    req

    可选的请求资源，可被 eio_get_last_error() 之类的函数使用。

    data

    Arbitrary variable passed to callback.

    返回值

    eio_custom() returns request resource on success, 或者在失败时返回 false.

    示例

    示例 #1 eio_custom() example

    <?php
    /* Callback for the custom callback */
    function my_custom_callback($data, $result) {
    var_dump($data);
    var_dump(count($result));
    var_dump($result['data_modified']);
    var_dump($result['result']);
    }

    /* The custom request */
    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();
    ?>

    以上示例的输出类似于：

    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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