PHP implementation of File download (multiple file format) code

/** * File Download * Multiple file formats, including PDF, zip, gif, JPG, MPEG, Word, etc. * Edit bbs.it-home.org */ function Dl_file ($file) { First, see if the file exists if (!is_file ($file)) {die ("404 File Not found!");} Gather relevent info about file $len = FileSize ($file); $filename = basename ($file); $file _extension = Strtolower (substr (STRRCHR ($filename, "."), 1); This would 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 is for extensions that shouldn ' t is downloaded (sensitive stuff, like PHP files) Case "PHP": Case "htm": Case "HTML": Case ' txt ': Die ("cannot is used for". $file _extension. "Files!"); Break Default: $ctype = "Application/force-download"; } 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); Exit } ?> Copy Code

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