eio_customeio_dup2
(PECL eio >= 0.0.1dev)
eio_dup2 — Duplicate a file descriptor
설명
resource eio_dup2
( int $fd
, int $fd2
[, int $pri = EIO_PRI_DEFAULT
[, mixed $callback = NULL
[, mixed $data = NULL
]]] )
eio_dup2() duplicates file descriptor.
인수
- fd
-
Source file descriptor
- fd2
-
Target file descriptor
- pri
-
The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.
- callback
-
callback function is called when the request is done. It should match the following prototype:
$data is custom data passed to the request. $result contains request-specific result value; basically, the value returned by corresponding system call.void callback($data, $result); - data
-
Arbitrary variable passed to callback.
반환값
eio_dup2() returns request resource on success or FALSE on error.
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