eio_sendfile
(PECL eio >= 0.0.1dev)
eio_sendfile — Transfer data between file descriptors
說明
$out_fd
, mixed $in_fd
, int $offset
, int $length
[, int $pri
[, callable $callback
[, string $data
]]] )eio_sendfile() copies data between one file descriptor and another. See SENDFILE(2) man page for details.
參數
-
out_fd -
Output stream, Socket resource, or file descriptor. Should be opened for writing.
-
in_fd -
Input stream, Socket resource, or file descriptor. Should be opened for reading.
-
offset -
Offset within the source file.
-
length -
Number of bytes to copy.
-
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_sendfile() returns request resource on success or FALSE on error.
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