eio_nop
(PECL eio >= 0.0.1dev)
eio_nop — Does nothing, except go through the whole request cycle.
說明
resource eio_nop
([ int
$pri = EIO_PRI_DEFAULT
[, callable $callback = NULL
[, mixed $data = NULL
]]] )eio_nop() does nothing, except go through the whole request cycle. Could be useful in debugging.
參數
-
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。其應匹配以下原型：void callback(mixed $data, int $result[, resource $req]);-
data -
傳遞給請求的用戶資料。
-
result -
針對請求的結果值。通常是對應的系統較回傳值。
-
req -
可選擇的請求資源，可被 eio_get_last_error() 之類的函式使用。
-
-
data -
Arbitrary variable passed to
callback.
回傳值
eio_nop() returns request resource on success or FALSE on error.
參見
- eio_busy
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