php中的proc_open+fwrite应用有关问题

<?php$descriptorspec = array(   0 => array("pipe", "r"),  // stdin is a pipe that the child will read from   1 => array("pipe", "w"),  // stdout is a pipe that the child will write to   2 => array("file", "error-output.txt", "a") // stderr is a file to write to);$process = proc_open("d:\\64test.exe", $descriptorspec, $pipes);if (is_resource($process)) {    // $pipes now looks like this:    // 0 => writeable handle connected to child stdin    // 1 => readable handle connected to child stdout    // Any error output will be appended to /tmp/error-output.txt        fwrite($pipes[0], "q");    fclose($pipes[0]);    while (!feof($pipes[1]))     {        $result = fgets($pipes[1], 1024);        echo "r:$result<br>";    }    fclose($pipes[1]);        // It is important that you close any pipes before calling    // proc_close in order to avoid a deadlock    $return_value = proc_close  ($process);    echo "command returned $return_value<br>";}?>

#include <iostream>using namespace std;int main(int argc,char *argv[]){    char buf[1024]={0};    /*fgets(buf,sizeof(buf),stdin);*/    while(buf[0]!='q')    {        std::cin>>buf;        std::cout<<buf;    }    return -3;}