eio_write
(PECL eio >= 0.0.1dev)
eio_write — Write to file
说明
eio_write
( 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.
参数
-
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 -
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_write() returns request resource on success or FALSE on error.
参见
- eio_open