note 84115 added to function.fread

I couldn't get some of the previous resume scripts to work with Free Download Manager or Firefox. I did some clean up and modified the code a little. Changes: 1. Added a Flag to specify if you want download to be resumable or not 2. Some error checking and data cleanup for invalid/multiple ranges based on http://tools.ietf.org/id/draft-ietf-http-range-retrieval-00.txt 3. Always calculate a $seek_end even though the range specification says it could be empty... eg: bytes 500-/1234 4. Removed some Cache headers that didn't seem to be needed. (add back if you have problems) 5. Only send partial content header if downloading a piece of the file (IE workaround) <?php function dl_file_resumable($file, $is_resume=TRUE) { //First, see if the file exists if (!is_file($file)) { die("<b>404 File not found!</b>"); } //Gather relevent info about file $size = filesize($file); $fileinfo = pathinfo($file); //workaround for IE filename bug with multiple periods / multiple dots in filename //that adds square brackets to filename - eg. setup.abc.exe becomes setup[1].abc.exe $filename = (strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE')) ? preg_replace('/\./', '%2e', $fileinfo['basename'], substr_count($fileinfo['basename'], '.') - 1) : $fileinfo['basename']; $file_extension = strtolower($path_info['extension']); //This will set the Content-Type to the appropriate setting for the file switch($file_extension) { case 'exe': $ctype='application/octet-stream'; break; case 'zip': $ctype='application/zip'; break; case 'mp3': $ctype='audio/mpeg'; break; case 'mpg': $ctype='video/mpeg'; break; case 'avi': $ctype='video/x-msvideo'; break; default: $ctype='application/force-download'; } //check if http_range is sent by browser (or download manager) if($is_resume && isset($_SERVER['HTTP_RANGE'])) { list($size_unit, $range_orig) = explode('=', $_SERVER['HTTP_RANGE'], 2); if ($size_unit == 'bytes') { //multiple ranges could be specified at the same time, but for simplicity only serve the first range //http://tools.ietf.org/id/draft-ietf-http-range-retrieval-00.txt list($range, $extra_ranges) = explode(',', $range_orig, 2); } else { $range = ''; } } else { $range = ''; } //figure out download piece from range (if set) list($seek_start, $seek_end) = explode('-', $range, 2); //set start and end based on range (if set), else set defaults //also check for invalid ranges. $seek_end = (empty($seek_end)) ? ($size - 1) : min(abs(intval($seek_end)),($size - 1)); $seek_start = (empty($seek_start) || $seek_end < abs(intval($seek_start))) ? 0 : max(abs(intval($seek_start)),0); //add headers if resumable if ($is_resume) { //Only send partial content header if downloading a piece of the file (IE workaround) if ($seek_start > 0 || $seek_end < ($size - 1)) { header('HTTP/1.1 206 Partial Content'); } header('Accept-Ranges: bytes'); header('Content-Range: bytes '.$seek_start.'-'.$seek_end.'/'.$size); } //headers for IE Bugs (is this necessary?) //header("Cache-Control: cache, must-revalidate"); //header("Pragma: public"); header('Content-Type: ' . $ctype); header('Content-Disposition: attachment; filename="' . $filename . '"'); header('Content-Length: '.($seek_end - $seek_start + 1)); //open the file $fp = fopen($file, 'rb'); //seek to start of missing part fseek($fp, $seek_start); //start buffered download while(!feof($fp)) { //reset time limit for big files set_time_limit(0); print(fread($fp, 1024*8)); flush(); ob_flush(); } fclose($fp); exit; } ?> ---- Server IP: 208.69.120.35 Probable Submitter: 76.175.236.235 ---- Manual Page -- http://www.php.net/manual/en/function.fread.php Edit -- https://master.php.net/note/edit/84115 Del: integrated -- https://master.php.net/note/delete/84115/integrated Del: useless -- https://master.php.net/note/delete/84115/useless Del: bad code -- https://master.php.net/note/delete/84115/bad+code Del: spam -- https://master.php.net/note/delete/84115/spam Del: non-english -- https://master.php.net/note/delete/84115/non-english Del: in docs -- https://master.php.net/note/delete/84115/in+docs Del: other reasons-- https://master.php.net/note/delete/84115 Reject -- https://master.php.net/note/reject/84115 Search -- https://master.php.net/manage/user-notes.php