リモートファイルを読み取るPHP関数

 $return = '';
 $matches = parse_url($url);
 $host = $matches['host'];
 $path = $matches['path'] ? $matches['path'].(isset($matches['query']) ? '?'.$matches['query'] : '') : '/';
 $port = !empty($matches[ 'ポート']） ？ $matches['port'] : 80;

 if($post) {
 $out = "POST $path HTTP/1.0rn";
 $out .= "Accept: */*rn";
 $out . = "Accept-Language: zh-cnrn";
 $boundary = $encodetype == 'URLENCODE' ? '' : ';'.substr($post, 0, トリム(strpos($post, "n")));
 $out .= $encodetype == 'URLENCODE' ? "Content-Type: application/x-www-form-urlencodedrn" : "Content-Type: multipart/form-data$boundaryrn";
 $out .= "ユーザーエージェント: $_SERVER[HTTP_USER_AGENT]rn";
 $ out .= "ホスト: $hostrn";
 $out .= 'Content-Length: '.strlen($post)."rn";
 $out .= "接続: Closern";
 $out .= "キャッシュ-Control: no-cachern";
 $out .= "Cookie: $cookiernrn";
 $out .= $post;
 } else {
 $out = "GET $path HTTP/1.0rn";
 $out . = "受け入れ: */*rn";
 $out .= "受け入れ言語: zh-cnrn";
 $out .= "ユーザーエージェント: $_SERVER[HTTP_USER_AGENT]rn";
 $out .= "ホスト: $hostrn";
 $out .= "リファラー: rn";
 $out .= "接続: Closern";
 $out .= "Cookie: $cookiernrn";
 }
 $fp = @fsockopen(($ ip ? $ip : $host), $port, $errno, $errstr, $timeout);
 if(!$fp) {
 return '';
 } else {
 stream_set_blocking($fp, $block);
 stream_set_timeout($fp, $timeout);
 @fwrite($fp, $out);
 $status = stream_get_meta_data($fp);
 if(!$status['timed_out']) {
 while (!feof($) fp)) {
 if(($header = @fgets($fp)) && ($header == "rn" ||  $header == "n")) {
 Break;
 }
 }

 $stop = false;
 while(!feof($fp) && !$stop) {
 $data = fread($fp, ($制限 == 0 || $limit > 8192 : $limit));
 $return .= $data;
 if($limit) {
 $limit -= strlen($data);
 $stop = $ limit  }
 }
 }
 @fclose($fp);
 return $return;
 }
 }

PHP