(PECL eio >= 0.5.0b)
Repositions the offset of the open file associated with the fd argument to the argument offset according to the directive whence
resource eio_seek ( mixed $fd, int $offset, int $whence [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] )
eio_seek() repositions the offset of the open file associated with stream, Socket resource, or file descriptor specified by fd to