How to download various files in php based on header function

This article mainly introduces in detail the code of PHP using the header function to download various files. Interested friends can refer to it

The specific content is as follows

404 File not found!" ); } // Gather relevent info about file $len = filesize ( $file ); $filename = basename ( $file ); $file_extension = strtolower ( substr ( strrchr ( $filename, "." ), 1 ) ); // This will set the Content-Type to the appropriate setting for the file switch ($file_extension) { case "pdf" : $ctype = "application/pdf"; break; case "exe" : $ctype = "application/octet-stream"; break; case "zip" : $ctype = "application/zip"; break; case "doc" : $ctype = "application/msword"; break; case "xls" : $ctype = "application/vnd.ms-excel"; break; case "ppt" : $ctype = "application/vnd.ms-powerpoint"; break; case "gif" : $ctype = "image/gif"; break; case "png" : $ctype = "image/png"; break; case "jpeg" : case "jpg" : $ctype = "image/jpg"; break; case "mp3" : $ctype = "audio/mpeg"; break; case "wav" : $ctype = "audio/x-wav"; break; case "mpeg" : case "mpg" : case "mpe" : $ctype = "video/mpeg"; break; case "mov" : $ctype = "video/quicktime"; break; case "avi" : $ctype = "video/x-msvideo"; break; // The following are for extensions that shouldn't be downloaded // (sensitive stuff, like php files) case "php" : case "htm" : case "html" : case "txt" : die ( "Cannot be used for " . $file_extension . " files!" ); break; default : $ctype = "application/force-download"; } $file_temp = fopen ( $file, "r" ); // Begin writing headers header ( "Pragma: public" ); header ( "Expires: 0" ); header ( "Cache-Control: must-revalidate, post-check=0, pre-check=0" ); header ( "Cache-Control: public" ); header ( "Content-Description: File Transfer" ); // Use the switch-generated Content-Type header ( "Content-Type: $ctype" ); // Force the download $header = "Content-Disposition: attachment; filename=" . $filename . ";"; header ( $header ); header ( "Content-Transfer-Encoding: binary" ); header ( "Content-Length: " . $len ); //@readfile ( $file ); echo fread ( $file_temp, filesize ( $file ) ); fclose ( $file_temp ); exit (); } ?>

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