Php uses the header to download the code-PHP source code

In php, if you want to download slice files, php files, and html files, we will open them directly if you click them on the website. If you want to download these files, you can use the phpheader function to perform operations, the following describes how to use the phpheader function to download files. For more information, see. In php, if you want to download slice files, php files, and html files, we will open them directly if you click them on the website. If you want to download these files, you can use the php header function, next, I will introduce the example of using the php header function to download files. For more information, see.

Script ec (2); script

Example 1

The Code is as follows:

Function download ($ file_url, $ new_name = ''){ If (! Isset ($ file_url) | trim ($ file_url) = ''){ Return '20140901 '; } If (! File_exists ($ file_url) {// check whether the file exists Return '20140901 '; } $ File_name = basename ($ file_url ); $ File_type = explode ('.', $ file_url ); $ File_type = $ file_type [count ($ file_type)-1]; $ File_name = trim ($ new_name = '')? $ File_name: urlencode ($ new_name). '.'. $ file_type; $ File_type = fopen ($ file_url, 'R'); // open the file // Input file tag Header ("Content-type: application/octet-stream "); Header ("Accept-Ranges: bytes "); Header ("Accept-Length:". filesize ($ file_url )); Header ("Content-Disposition: attachment; filename =". $ file_name ); // Output file content Echo fread ($ file_type, filesize ($ file_url )); Fclose ($ file_type ); }

Example 2

The following php code can solve the problem:

The Code is as follows:

If (empty ($ _ GET ['filename']) | empty ($ _ GET ['filedir']) | empty ($ _ GET ['fileid']) { Echo 'script alert ("illegal connection! "); Location. replace (" index. php ") script '; exit (); } $ File_name = $ _ GET ['filename']; $ File_dir = $ _ GET ['filedir']; $ FileId = $ _ GET ['fileid']; $ File_dir = $ file_dir ."/"; If (! File_exists ($ file_dir. $ file_name) {// check whether the file exists Echo "file not found "; Exit; } Else { $ File = fopen ($ file_dir. $ file_name, "r"); // open the file // Input file tag Header ("Content-type: application/octet-stream "); Header ("Accept-Ranges: bytes "); Header ("Accept-Length:". filesize ($ file_dir. $ file_name )); Header ("Content-Disposition: attachment; filename =". $ file_name ); // Output file content Echo fread ($ file, filesize ($ file_dir. $ file_name )); Fclose ($ file ); Exit (); } ?>

Direct File Download

The Code is as follows:

$ File = get_file_address (); // the actual address of the file (url is supported, but url is not recommended) If (file_exists ($ file )){ Header ('content-Description: File Transfer '); Header ('content-Type: application/octet-stream '); Header ('content-Disposition: attachment; filename = '. basename ($ file )); Header ('content-Transfer-Encoding: binary '); Header ('expires: 0 '); Header ('cache-Control: must-revalidate, post-check = 0, pre-check = 0 '); Header ('pragma: public '); Header ('content-Length: '. filesize ($ file )); Ob_clean (); Flush (); Readfile ($ file ); Exit; } ?>

TIPS: the header function can not only download files, but also has many other functions, such as sending status information such as 404,301.

Note: before using the header, we must have no output before the header; otherwise, an error will be reported.