我有一个名为 Prestashop 的电子商务软件包。 它们允许您销售虚拟产品、可下载项目，例如软件、电子书等。
他们的软件存在问题，他们将可下载产品的物理文件名命名为 40 个字符的哈希值，没有扩展名。然后，当客户下载文件时，系统应该检查 MIME 类型，以便在文件发送到客户浏览器之前在 header 中设置它。
问题就出在这里。他们使用四种方法来确定 MIME 类型。
finfo_open()函数，这个扩展恰好没有安装在我的主机上，所以它失败了。mime_content_type()函数，它接受没有扩展名的文件并返回“text/plain”MIME 类型，无论 MIME 类型实际是什么。此功能已被弃用，我认为他们根本不应该使用它。exec('file -bi '.escapeshellarg($file))。这在我的主机上也失败了。- 一组与 MIME 类型相匹配的扩展名。
我很难弄清楚这一点，因为当您将文件添加到没有扩展名的后台时，他们会命名文件。我很难看出这是否有效。
我已经尝试了许多其他修复，包括从 cURL 调用中获取 CURLINFO_CONTENT_TYPE 以下载文件，顺便说一句，它会为同一文件返回“text/plain”。
关于如何解决这个问题有什么想法吗？
使用的解决方案...
if (empty($mime_type))
{
$bName = basename($filename);
$bName = explode('.', $bName);
$bName = strtolower($bName[count($bName) - 1]);
$mimeTypes = array(
'ez' => 'application/andrew-inset',
'atom' => 'application/atom+xml',
'jar' => 'application/java-archive',
'hqx' => 'application/mac-binhex40',
'cpt' => 'application/mac-compactpro',
'mathml' => 'application/mathml+xml',
'doc' => 'application/msword',
'dat' => 'application/octet-stream',
'oda' => 'application/oda',
'ogg' => 'application/ogg',
'pdf' => 'application/pdf',
'ai' => 'application/postscript',
'eps' => 'application/postscript',
'ps' => 'application/postscript',
'rdf' => 'application/rdf+xml',
'rss' => 'application/rss+xml',
'smi' => 'application/smil',
'smil' => 'application/smil',
'gram' => 'application/srgs',
'grxml' => 'application/srgs+xml',
'kml' => 'application/vnd.google-earth.kml+xml',
'kmz' => 'application/vnd.google-earth.kmz',
'mif' => 'application/vnd.mif',
'xul' => 'application/vnd.mozilla.xul+xml',
'xls' => 'application/vnd.ms-excel',
'xlb' => 'application/vnd.ms-excel',
'xlt' => 'application/vnd.ms-excel',
'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
'ppt' => 'application/vnd.ms-powerpoint',
'pps' => 'application/vnd.ms-powerpoint',
'odc' => 'application/vnd.oasis.opendocument.chart',
'odb' => 'application/vnd.oasis.opendocument.database',
'odf' => 'application/vnd.oasis.opendocument.formula',
'odg' => 'application/vnd.oasis.opendocument.graphics',
'otg' => 'application/vnd.oasis.opendocument.graphics-template',
'odi' => 'application/vnd.oasis.opendocument.image',
'odp' => 'application/vnd.oasis.opendocument.presentation',
'otp' => 'application/vnd.oasis.opendocument.presentation-template',
'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template',
'odt' => 'application/vnd.oasis.opendocument.text',
'odm' => 'application/vnd.oasis.opendocument.text-master',
'ott' => 'application/vnd.oasis.opendocument.text-template',
'oth' => 'application/vnd.oasis.opendocument.text-web',
'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
'vsd' => 'application/vnd.visio',
'wbxml' => 'application/vnd.wap.wbxml',
'wmlc' => 'application/vnd.wap.wmlc',
'wmlsc' => 'application/vnd.wap.wmlscriptc',
'vxml' => 'application/voicexml+xml',
'bcpio' => 'application/x-bcpio',
'vcd' => 'application/x-cdlink',
'pgn' => 'application/x-chess-pgn',
'cpio' => 'application/x-cpio',
'csh' => 'application/x-csh',
'dcr' => 'application/x-director',
'dir' => 'application/x-director',
'dxr' => 'application/x-director',
'dvi' => 'application/x-dvi',
'spl' => 'application/x-futuresplash',
'tgz' => 'application/x-gtar',
'gtar' => 'application/x-gtar',
'hdf' => 'application/x-hdf',
'js' => 'application/x-javascript',
'skp' => 'application/x-koan',
'skd' => 'application/x-koan',
'skt' => 'application/x-koan',
'skm' => 'application/x-koan',
'latex' => 'application/x-latex',
'nc' => 'application/x-netcdf',
'cdf' => 'application/x-netcdf',
'sh' => 'application/x-sh',
'shar' => 'application/x-shar',
'swf' => 'application/x-shockwave-flash',
'sit' => 'application/x-stuffit',
'sv4cpio' => 'application/x-sv4cpio',
'sv4crc' => 'application/x-sv4crc',
'tar' => 'application/x-tar',
'tcl' => 'application/x-tcl',
'tex' => 'application/x-tex',
'texinfo' => 'application/x-texinfo',
'texi' => 'application/x-texinfo',
't' => 'application/x-troff',
'tr' => 'application/x-troff',
'roff' => 'application/x-troff',
'man' => 'application/x-troff-man',
'me' => 'application/x-troff-me',
'ms' => 'application/x-troff-ms',
'ustar' => 'application/x-ustar',
'src' => 'application/x-wais-source',
'xhtml' => 'application/xhtml+xml',
'xht' => 'application/xhtml+xml',
'xslt' => 'application/xslt+xml',
'xml' => 'application/xml',
'xsl' => 'application/xml',
'dtd' => 'application/xml-dtd',
'zip' => 'application/zip',
'au' => 'audio/basic',
'snd' => 'audio/basic',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'kar' => 'audio/midi',
'mpga' => 'audio/mpeg',
'mp2' => 'audio/mpeg',
'mp3' => 'audio/mpeg',
'aif' => 'audio/x-aiff',
'aiff' => 'audio/x-aiff',
'aifc' => 'audio/x-aiff',
'm3u' => 'audio/x-mpegurl',
'wma' => 'audio/x-ms-wma',
'wax' => 'audio/x-ms-wax',
'ram' => 'audio/x-pn-realaudio',
'ra' => 'audio/x-pn-realaudio',
'rm' => 'application/vnd.rn-realmedia',
'wav' => 'audio/x-wav',
'pdb' => 'chemical/x-pdb',
'xyz' => 'chemical/x-xyz',
'bmp' => 'image/bmp',
'cgm' => 'image/cgm',
'gif' => 'image/gif',
'ief' => 'image/ief',
'jpeg' => 'image/jpeg',
'jpg' => 'image/jpeg',
'jpe' => 'image/jpeg',
'png' => 'image/png',
'svg' => 'image/svg+xml',
'tiff' => 'image/tiff',
'tif' => 'image/tiff',
'djvu' => 'image/vnd.djvu',
'djv' => 'image/vnd.djvu',
'wbmp' => 'image/vnd.wap.wbmp',
'ras' => 'image/x-cmu-raster',
'ico' => 'image/x-icon',
'pnm' => 'image/x-portable-anymap',
'pbm' => 'image/x-portable-bitmap',
'pgm' => 'image/x-portable-graymap',
'ppm' => 'image/x-portable-pixmap',
'rgb' => 'image/x-rgb',
'xbm' => 'image/x-xbitmap',
'psd' => 'image/x-photoshop',
'xpm' => 'image/x-xpixmap',
'xwd' => 'image/x-xwindowdump',
'eml' => 'message/rfc822',
'igs' => 'model/iges',
'iges' => 'model/iges',
'msh' => 'model/mesh',
'mesh' => 'model/mesh',
'silo' => 'model/mesh',
'wrl' => 'model/vrml',
'vrml' => 'model/vrml',
'ics' => 'text/calendar',
'ifb' => 'text/calendar',
'css' => 'text/css',
'csv' => 'text/csv',
'html' => 'text/html',
'htm' => 'text/html',
'txt' => 'text/plain',
'asc' => 'text/plain',
'rtx' => 'text/richtext',
'rtf' => 'text/rtf',
'sgml' => 'text/sgml',
'sgm' => 'text/sgml',
'tsv' => 'text/tab-separated-values',
'wml' => 'text/vnd.wap.wml',
'wmls' => 'text/vnd.wap.wmlscript',
'etx' => 'text/x-setext',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpe' => 'video/mpeg',
'qt' => 'video/quicktime',
'mov' => 'video/quicktime',
'mxu' => 'video/vnd.mpegurl',
'm4u' => 'video/vnd.mpegurl',
'flv' => 'video/x-flv',
'asf' => 'video/x-ms-asf',
'asx' => 'video/x-ms-asf',
'wmv' => 'video/x-ms-wmv',
'wm' => 'video/x-ms-wm',
'wmx' => 'video/x-ms-wmx',
'avi' => 'video/x-msvideo',
'ogv' => 'video/ogg',
'movie' => 'video/x-sgi-movie',
'ice' => 'x-conference/x-cooltalk');
if (isset($mimeTypes[$bName]))
$mime_type = $mimeTypes[$bName];
else
$mime_type = 'application/octet-stream';
}
最佳答案
getID3 库可以识别 PDF 和许多其他文件类型。检查一下:
关于php - 在没有文件扩展名的情况下在 PHP 中获取 MIME 类型，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3523249/