PHP fsockopen模拟POST/GET方法

原文链接：http://www.nowamagic.net/academy/detail/12220214

fsockopen 除了前面小节的模拟生成 HTTP 连接之外，还能实现很多功能，比如模拟 post 和 get 传送数据的方法。比如下面的例子：

//fsocket模拟post提交
$url = "http://localhost/test2.php?site=nowamagic.net";
print_r(parse_url($url));

//echo $query;
sock_get($url,"user=gonn");
//sock_get($url, $query);

//fsocket模拟get提交
function sock_get($url, $query)
{
    $data = array(
    'foo'=>'bar', 
    'baz'=>'boom', 
    'site'=>'www.nowamagic.net', 
    'name'=>'nowa magic'); 
    
    $query_str = http_build_query($data);
    
    $info = parse_url($url);
    $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
    //$head = "GET ".$info['path']."?".$info["query"]." HTTP/1.0
";
    $head = "GET ".$info['path']."?".$query_str." HTTP/1.0
";
    $head .= "Host: ".$info['host']."
";
    $head .= "
";
    $write = fputs($fp, $head);
    while (!feof($fp))
    {
        $line = fread($fp,4096);
        echo $line;
    }
}

sock_post($url,"user=gonn");

function sock_post($url, $query)
{    
    $info = parse_url($url);
    $fp = fsockopen($info["host"], 80, $errno, $errstr, 3);
    $head = "POST ".$info['path']."?".$info["query"]." HTTP/1.0
";
    $head .= "Host: ".$info['host']."
";
    $head .= "Referer: http://".$info['host'].$info['path']."
";
    $head .= "Content-type: application/x-www-form-urlencoded
";
    $head .= "Content-Length: ".strlen(trim($query))."
";
    $head .= "
";
    $head .= trim($query);
    $write = fputs($fp, $head);
    while (!feof($fp))
    {
        $line = fread($fp,4096);
        echo $line;
    }
}

接收页面 test2.php 的代码为：

$data = $_REQUEST;

echo '<pre>';
print_r( $data );
echo '</pre>';