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1380Re: php script to download the files

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  • kumar_manoj77
    Jul 31, 2009
    • 0 Attachment
      I have not access to the php.ini file as it is shared server.
      I had increase the memory_limit by ini_set function to 64 MB. but still no success.

      I have doubt, why should i increase the max_file_upload as I am not trying to upload the file.
      I am trying to download the zip file using php script


      --- In bang-phpug@yahoogroups.com, Abdul Rehman <abdulrehman97@...> wrote:
      >
      > Just expand your memory_limit, post_file_size and max_file_upload in php.ini file and then try. if problem exist then call me.
      >
      >
      >
      >
      > ________________________________
      > From: kumar_manoj77 <kumar_manoj77@...>
      > To: bang-phpug@yahoogroups.com
      > Sent: Wednesday, July 29, 2009 11:39:50 AM
      > Subject: [bang-phpug] php script to download the files
      >
      >
      > I am trying to write a script to download zip file(20 MB). but after downloading content of 5 or 6 MB, the script stops and failed to download the entire file.
      > I am using the following function
      > <?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;
      > }
      >
      > ?>
      >
      > pls help me to correct the code and download the zip file properly.
      > thanks in advance.
      >
      >
      >
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
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