(PECL eio >= 0.0.1dev)
eio_dup2 — Duplicate a file descriptor
$fd
,$fd2
,$pri
= EIO_PRI_DEFAULT,$callback
= NULL,$data
= NULLeio_dup2() duplicates file descriptor.
fd
Source stream, Socket resource, or numeric file descriptor
fd2
Target stream, Socket resource, or numeric 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:
void callback(mixed $data, int $result[, resource $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error().
data
Arbitrary variable passed to callback
.
eio_dup2() returns request resource on success, başarısızlık durumunda false
döner.