eio_custom
(PECL eio >= 0.0.1dev)
eio_custom — Execute custom request like any other eio_* call
說明
eio_custom() executes custom function specified by
execute processing it just like any other eio_* call.
參數
-
execute -
Specifies the request function that should match the following prototype:
mixed execute(mixed data);callbackis event completion callback that should match the following prototype:void callback(mixed data, mixed result);datais the data passed toexecuteviadataargument without modificationsresultvalue returned byexecute -
pri -
請求的優先順序：
EIO_PRI_DEFAULT，EIO_PRI_MIN，EIO_PRI_MAX或null。如果是null，pri將設為EIO_PRI_DEFAULT。 -
callback -
callback函式在請求完成時被呼叫。其應匹配一下原型：void callback(mixed $data, int $result[, resource $req]);-
data -
傳遞給請求的用戶數據。
-
result -
針對請求的結果的值。通常是相應的系統呼叫返回的值。
-
req -
可選的請求資源，可被 eio_get_last_error() 之類的函式使用。
-
-
data -
Arbitrary variable passed to
callback.
返回值
eio_custom() returns request resource on success, 或者在失敗時返回 false.
範例
示例 #1 eio_custom() example
<?php
/* Callback for the custom callback */
function my_custom_callback($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();
?>
以上例程的輸出類似於：
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)