这为我工作：
$cmd = "ping 127.0.0.1";$descriptorspec = array( 0 => array("pipe", "r"), // stdin is a pipe that the child will read from 1 => array("pipe", "w"), // stdout is a pipe that the child will write to 2 => array("pipe", "w") // stderr is a pipe that the child will write to);flush();$process = proc_open($cmd, $descriptorspec, $pipes, realpath('./'), array());echo "<pre>";if (is_resource($process)) { while ($s = fgets($pipes[1])) { print $s; flush(); }}echo "</pre>";
