PhpHeader function to download the short-point resume program _ PHP Tutorial

The phpHeader function downloads the short-point resume program. This article will summarize several functions for downloading the short-point resume program. these functions mainly use the php header function. if you need to know about these functions, you can refer to them. For example, download this article to summarize several functions for downloading the short-point resumable Upload program. these functions mainly use the php header function. if you need to know about these functions, you can refer to them.

For example, the size and file name of the downloaded file are output during download.
The premise is that you need to add a sentence for the configuration of the. htaccess file.
SetEnv no-gzip dont-vary
That is, files are not compressed.

Example 1

The code is as follows:

Function download ($ file_dir, $ file_name) // Parameter description: // File_dir: Directory of the file // File_name: file name { $ File_dir = chop ($ file_dir); // remove unnecessary spaces in the path // Obtain the path of the object to be downloaded If ($ file_dir! = '') { $ File_path = $ file_dir; If (substr ($ file_dir, strlen ($ file_dir)-1, strlen ($ file_dir ))! = '/') $ File_path. = '/'; $ File_path. = $ file_name; } Else { $ File_path = $ file_name; } // Determine whether the object to be downloaded exists If (! File_exists ($ file_path )) { Echo 'Sorry, the file you want to download does not exist. '; Return false; } $ File_size = filesize ($ file_path ); @ Header ("Cache-control: public "); @ Header ("Pragma: public "); // Header ("Content-Encoding: gzip "); @ Header ("Content-Type: application/octetstream "); Header ("Content-Length: $ file_size "); Header ("Accept-Ranges: bytes "); Header ("Content-Disposition: attachment; filename =". $ file_name ); $ Fp = fopen ($ file_path, "r "); Fpassthru ($ fp ); Return true; } Download ('path parameters', 'filename '); ?>

Example 2

The code is as follows:

$ Fname = './MMLDZG.mp3 '; $ Fp = fopen ($ fname, 'RB '); $ Fsize = filesize ($ fname ); If (isset ($ _ SERVER ['http _ range']) & ($ _ SERVER ['http _ range']! = "") & Preg_match ("/^ bytes = ([0-9] +)-$/I", $ _ SERVER ['http _ range'], $ match) & ($ match [1] <$ fsize )){ $ Start = $ match [1]; } Else { $ Start = 0; } @ Header ("Cache-control: public"); @ header ("Pragma: public "); If ($ star --> 0 ){ Fseek ($ fp, $ start ); Header ("HTTP/1.1 206 Partial Content "); Header ("Content-Length:". ($ fsize-$ start )); Header ("Content-Ranges: bytes". $ start. "-". ($ fsize-1). "/". $ fsize ); } Else { Header ("Content-Length: $ fsize "); Header ("Accept-Ranges: bytes "); } @ Header ("Content-Type: application/octet-stream "); @ Header ("Content-Disposition: attachment?filename=mmdld= "); Fpassthru ($ fp );

The fpassthru () function outputs all the remaining data at the file pointer.

This function reads the given file pointer from the current location to EOF and writes the result to the output buffer.

The above two instances have poor support for Chinese characters. the following function can solve this problem well.

The code is as follows:

/** * Breakpoint resume implementation of PHP-HTTP * @ Param string $ path: path of the file * @ Param string $ file: file name * @ Return void */ Function download ($ path, $ file ){ $ Real = $ path. '/'. $ file; If (! File_exists ($ real )){ Return false; } $ Size = filesize ($ real ); $ Size2 = $ 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.'-'. $ size2.'/'. $ size ); } Else { Header ('content-Length: '. $ size ); Header ('content-Range: bytes 0-'. $ size2.'/'. $ size ); } Header ('accenpt-Ranges: bytes '); Header ('application/octet-stream '); Header ("Cache-control: public "); Header ("Pragma: public "); // Solve Chinese garbled characters during download 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 ); } /* End of PHP */

Bytes. For example, download...