php 傳送POST到別的URL並取得回應內容 使用fsockopen

資料來源:http://blog.hsin.tw/2009/php-post-method-fsockopen/

//接收POST參數的URL

$url = 'http://www.google.com';

//POST參數,在這個陣列裡,索引是name,值是value,沒有限定組數

$postdata = array('post_name'=>'post_value','acc'=>'hsin','nick'=>'joe');

//函式回覆的值就是取得的內容

$result = sendpost($url,$postdata);

function sendpost($url, $data){

//先解析url 取得的資訊可以看看http://www.php.net/parse_url

$url = parse_url($url);

$url_port = $url['port']==''?(($url['scheme']=='https')?443:80):$url['port'];

if(!$url) return "couldn't parse url";

//對要傳送的POST參數作處理

$encoded = "";

while(list($k,$v)=each($data)){

  $encoded .= ($encoded?'&':'');

  $encoded .= rawurlencode($k)."=".rawurlencode($v);

}

//開啟一個socket

$fp = fsockopen($url['host'],$url_port);

if(!$fp) return "Failed to open socket to ".$url['host'];

//header的資訊

fputs($fp,'POST '.$url['path'].($url['query']?'?'.$url['query']:'')." HTTP/1.0rn");

fputs($fp,"Host: ".$url['host']."n");

fputs($fp,"Content-type: application/x-www-form-urlencodedn");

fputs($fp,"Content-length: ".strlen($encoded)."n");

fputs($fp,"Connection: closenn");

fputs($fp,$encoded."n");

//取得回應的內容

$line = fgets($fp,1024);

if(!eregi("^HTTP/1.. 200", $line)) return;

$results = "";

$inheader = 1;

while(!feof($fp)){

  $line = fgets($fp,2048);

  if($inheader&&($line == "n" || $line == "rn")){

    $inheader = 0;

  }elseif(!$inheader){

    $results .= $line;

  }

}

fclose($fp);

return $results;

}


相關參考：
http://wezfurlong.org/blog/2006/nov/http-post-from-php-without-curl/