(PECL eio >= 0.0.1dev)
Duplicate a file descriptor
resource eio_dup2 ( mixed $fd, mixed $fd2 [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] )
eio_dup2() duplicates file descriptor.
Parameters:
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
Arbitrary variable passed to callback
.
Returns:
eio_dup2() returns request resource on success or FALSE
on error.
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