eio_write
(PECL eio >= 0.0.1dev)
eio_write — Write to file
說明
eio_write(
mixed
string
int
int
int
callable
mixed
): resource
mixed
$fd,string
$str,int
$length = 0,int
$offset = 0,int
$pri = EIO_PRI_DEFAULT,callable
$callback = NULL,mixed
$data = NULL): resource
eio_write() writes up to length bytes from str at offset offset from the beginning of the file.
參數
-
fd Stream, Socket resource, or numeric file descriptor, e.g. returned by eio_open()
-
str Source string
-
length Maximum number of bytes to write.
-
offset Offset from the beginning of file.
-
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_write() returns request resource on success, 或者在失敗時返回 false.
參見
- eio_open() - Opens a file