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Remote File Saving

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  1. // File to download
  2. $remoteFile = 'http://www.yahoo.com/';
  3.  
  4. // Local file for saving
  5. $localFile = "YahooHome.htm";
  6.  
  7. // Time to cache in hours
  8. $cacheTime = 24;
  9.  
  10. // Connection time out
  11. $connTimeout = 10;
  12.  
  13. if(file_exists($localFile) && (time() - ($cacheTime * 3600) < filemtime($localFile))){
  14.      readfile($localFile);
  15. }else{
  16.      $url = parse_url($remoteFile);
  17.      $host = $url['host'];
  18.      $path = isset($url['path']) ? $url['path'] : '/';
  19.  
  20.      if (isset($url['query'])) {
  21.           $path .= '?' . $url['query'];
  22.      }
  23.  
  24.      $port = isset($url['port']) ? $url['port'] : '80';
  25.  
  26.      $fp = @fsockopen($host, '80', $errno, $errstr, $connTimeout );
  27.  
  28.      if(!$fp){
  29.           // If connection failed, return the cached file
  30.           if(file_exists($localFile)){
  31.                readfile($localFile);
  32.           }
  33.      }else{
  34.           // Header Info
  35.           $header = "GET $path HTTP/1.0
  36. ";
  37.           $header .= "Host: $host
  38. ";
  39.           $header .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6
  40. ";
  41.           $header .= "Accept: */*
  42. ";
  43.           $header .= "Accept-Language: en-us,en;q=0.5
  44. ";
  45.           $header .= "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
  46. ";
  47.           $header .= "Keep-Alive: 300
  48. ";
  49.           $header .= "Connection: keep-alive
  50. ";
  51.           $header .= "Referer: http://$host
  52.  
  53. ";
  54.  
  55.            $response = '';
  56.           fputs($fp, $header);
  57.           // Get the file content
  58.           while($line = fread($fp, 4096)){
  59.                $response .= $line;
  60.           }
  61.           fclose( $fp );
  62.  
  63.           // Remove Header Info
  64.           $pos = strpos($response, "
  65.  
  66. ");
  67.           $response = substr($response, $pos + 4);
  68.           echo $response;
  69.  
  70.           // Save the file content
  71.           if(!file_exists($localFile)){
  72.                // Create the file, if it doesn't exist already
  73.                fopen($localFile, 'w');
  74.           }
  75.           if(is_writable($localFile)) {
  76.                if($fp = fopen($localFile, 'w')){
  77.                     fwrite($fp, $response);
  78.                     fclose($fp);
  79.                }
  80.           }
  81.      }
  82. }

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