EIO_DUP2(3) 1 EIO_DUP2(3)
eio_dup2 - Duplicate a file descriptor
SYNOPSIS
resource eio_dup2 (mixed $fd, mixed $fd2, [int $pri = EIO_PRI_DEFAULT], [callable $callback = NULL], [mixed $data = NULL])
DESCRIPTION
eio_dup2(3) duplicates file descriptor.
PARAMETERS
o $fd
- Source stream, Socket resource, or numeric file descriptor
o $fd2
- Target stream, Socket resource, or numeric file descriptor
o $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.
o $callback
-$callback function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
o $data
-is custom data passed to the request.
o $result
-request-specific result value; basically, the value returned by corresponding system call.
o $req
-is optional request resource which can be used with functions like eio_get_last_error(3)
o $data
- Arbitrary variable passed to $callback.
RETURN VALUES
eio_dup2(3) returns request resource on success or FALSE on error.
PHP Documentation Group EIO_DUP2(3)
