使用PHP Socket 编程模拟Http post和get请求(2)

<?php
 $flag = 0;
 $params = '';
 $errno = '';
 $errstr = '';
 //要post的数据
$argv = array(
    'var1'=>'abc',
    'var2'=>'how are you , my friend??');
//构造要post的字符串
foreach ($argv as $key=>$value) {
    if ($flag!=0) {
        $params .= "&";
        $flag = 1;
    }
    $params.= $key."="; $params.= urlencode($value);
    $flag = 1;
    }
    $length = strlen($params);
     //创建socket连接
    $fp = fsockopen("localhost",81,$errno,$errstr,10) or exit($errstr."--->".$errno);
    //构造post请求的头
    $header  = "POST /flandy/getpost.php HTTP/1.1\r\n";
    $header .= "Host:127.0.0.1\r\n";
    $header .= "Referer:/flandy/post.php\r\n";
    $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
    $header .= "Content-Length: ".$length."\r\n";
    $header .= "Connection: Close\r\n\r\n";
    //添加post的字符串
    $header .= $params."\r\n";
   

    //发送post的数据
    fputs($fp,$header);
    $inheader = 1;
    while (!feof($fp)) {
        $line = fgets($fp,1024); //去除请求包的头只显示页面的返回数据
        if ($inheader && ($line == "\n" || $line == "\r\n")) {
             $inheader = 0;
        }
        if ($inheader == 0) {
          echo $line;
        }
    }

fclose($fp);
?>

<?php
echo "this is the data posted";
echo "<pre>";
print_r($_REQUEST);
echo "</pre>";
?>