The method of implementing HTTP breakpoint continuation in PHP _php skill

This article illustrates the method of PHP implementing HTTP breakpoint Continuation. Share to everyone for your reference. The implementation method is as follows:

<?php/** * php-http Breakpoint Continuation * @param string $path: File is in the path * @param string $file: file name * @return void/function do Wnload ($path, $file) {$real = $path.
  /'. $file;
  if (!file_exists ($real)) {return false;
  } $size = FileSize ($real);
  $size 2 = $size-1;
  $range = 0;
    if (Isset ($_server[' Http_range ')) {header (' http/1.1 206 Partial Content ');
    $range = str_replace (' = ', '-', $_server[' Http_range '));
    $range = Explode ('-', $range);
    $range = Trim ($range [1]);
    Header (' Content-length: '. $size); Header (' Content-range:bytes '. $range. '-'. $size 2. '
  /'. $size);
    else {header (' content-length: '. $size); Header (' Content-range:bytes 0-'. $size 2. '
  /'. $size);
  Header (' accenpt-ranges:bytes ');
  Header (' Application/octet-stream ');
  Header ("Cache-control:public");
  Header ("Pragma:public");
  Solve the Chinese garbled problem when downloading in IE $ua = $_server[' http_user_agent '];
    if (Preg_match ('/msie/', $ua)) {$ie _filename = str_replace (' + ', '%20 ', UrlEncode ($file)); Header (' ConteNt-dispositon:attachment;
  Filename= '. $ie _filename);
  else {header (' content-dispositon:attachment filename= '. $file);
  $fp = fopen ($real, ' rb+ ');
  Fseek ($fp, $range);
    while (!feof ($fp)) {set_time_limit (0);
    Print (Fread ($FP, 1024));
    Flush ();
  Ob_flush ();
} fclose ($FP); }

I hope this article will help you with your PHP programming.