Convert MIME type to file Extension PHP
You could use something like:
function getExtension ($mime_type){
$extensions = array('image/jpeg' => 'jpeg',
'text/xml' => 'xml'
);
// Add as many other Mime Types / File Extensions as you like
return $extensions[$mime_type];
}
Note: not every MIME type has a fixed file extension. Also, MIME types like application/octet-stream can refer to multiple file extensions.
First get $mime type for an image, then explode the string by '/' which will return an array.
$extension = explode('/', $mime )[1];
Just gonna slap this up here with full credit due to Oliver Lillie from this comment:
function mime2ext($mime) {
$mime_map = [
'video/3gpp2' => '3g2',
'video/3gp' => '3gp',
'video/3gpp' => '3gp',
'application/x-compressed' => '7zip',
'audio/x-acc' => 'aac',
'audio/ac3' => 'ac3',
'application/postscript' => 'ai',
'audio/x-aiff' => 'aif',
'audio/aiff' => 'aif',
'audio/x-au' => 'au',
'video/x-msvideo' => 'avi',
'video/msvideo' => 'avi',
'video/avi' => 'avi',
'application/x-troff-msvideo' => 'avi',
'application/macbinary' => 'bin',
'application/mac-binary' => 'bin',
'application/x-binary' => 'bin',
'application/x-macbinary' => 'bin',
'image/bmp' => 'bmp',
'image/x-bmp' => 'bmp',
'image/x-bitmap' => 'bmp',
'image/x-xbitmap' => 'bmp',
'image/x-win-bitmap' => 'bmp',
'image/x-windows-bmp' => 'bmp',
'image/ms-bmp' => 'bmp',
'image/x-ms-bmp' => 'bmp',
'application/bmp' => 'bmp',
'application/x-bmp' => 'bmp',
'application/x-win-bitmap' => 'bmp',
'application/cdr' => 'cdr',
'application/coreldraw' => 'cdr',
'application/x-cdr' => 'cdr',
'application/x-coreldraw' => 'cdr',
'image/cdr' => 'cdr',
'image/x-cdr' => 'cdr',
'zz-application/zz-winassoc-cdr' => 'cdr',
'application/mac-compactpro' => 'cpt',
'application/pkix-crl' => 'crl',
'application/pkcs-crl' => 'crl',
'application/x-x509-ca-cert' => 'crt',
'application/pkix-cert' => 'crt',
'text/css' => 'css',
'text/x-comma-separated-values' => 'csv',
'text/comma-separated-values' => 'csv',
'application/vnd.msexcel' => 'csv',
'application/x-director' => 'dcr',
'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => 'docx',
'application/x-dvi' => 'dvi',
'message/rfc822' => 'eml',
'application/x-msdownload' => 'exe',
'video/x-f4v' => 'f4v',
'audio/x-flac' => 'flac',
'video/x-flv' => 'flv',
'image/gif' => 'gif',
'application/gpg-keys' => 'gpg',
'application/x-gtar' => 'gtar',
'application/x-gzip' => 'gzip',
'application/mac-binhex40' => 'hqx',
'application/mac-binhex' => 'hqx',
'application/x-binhex40' => 'hqx',
'application/x-mac-binhex40' => 'hqx',
'text/html' => 'html',
'image/x-icon' => 'ico',
'image/x-ico' => 'ico',
'image/vnd.microsoft.icon' => 'ico',
'text/calendar' => 'ics',
'application/java-archive' => 'jar',
'application/x-java-application' => 'jar',
'application/x-jar' => 'jar',
'image/jp2' => 'jp2',
'video/mj2' => 'jp2',
'image/jpx' => 'jp2',
'image/jpm' => 'jp2',
'image/jpeg' => 'jpeg',
'image/pjpeg' => 'jpeg',
'application/x-javascript' => 'js',
'application/json' => 'json',
'text/json' => 'json',
'application/vnd.google-earth.kml+xml' => 'kml',
'application/vnd.google-earth.kmz' => 'kmz',
'text/x-log' => 'log',
'audio/x-m4a' => 'm4a',
'audio/mp4' => 'm4a',
'application/vnd.mpegurl' => 'm4u',
'audio/midi' => 'mid',
'application/vnd.mif' => 'mif',
'video/quicktime' => 'mov',
'video/x-sgi-movie' => 'movie',
'audio/mpeg' => 'mp3',
'audio/mpg' => 'mp3',
'audio/mpeg3' => 'mp3',
'audio/mp3' => 'mp3',
'video/mp4' => 'mp4',
'video/mpeg' => 'mpeg',
'application/oda' => 'oda',
'audio/ogg' => 'ogg',
'video/ogg' => 'ogg',
'application/ogg' => 'ogg',
'font/otf' => 'otf',
'application/x-pkcs10' => 'p10',
'application/pkcs10' => 'p10',
'application/x-pkcs12' => 'p12',
'application/x-pkcs7-signature' => 'p7a',
'application/pkcs7-mime' => 'p7c',
'application/x-pkcs7-mime' => 'p7c',
'application/x-pkcs7-certreqresp' => 'p7r',
'application/pkcs7-signature' => 'p7s',
'application/pdf' => 'pdf',
'application/octet-stream' => 'pdf',
'application/x-x509-user-cert' => 'pem',
'application/x-pem-file' => 'pem',
'application/pgp' => 'pgp',
'application/x-httpd-php' => 'php',
'application/php' => 'php',
'application/x-php' => 'php',
'text/php' => 'php',
'text/x-php' => 'php',
'application/x-httpd-php-source' => 'php',
'image/png' => 'png',
'image/x-png' => 'png',
'application/powerpoint' => 'ppt',
'application/vnd.ms-powerpoint' => 'ppt',
'application/vnd.ms-office' => 'ppt',
'application/msword' => 'doc',
'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'pptx',
'application/x-photoshop' => 'psd',
'image/vnd.adobe.photoshop' => 'psd',
'audio/x-realaudio' => 'ra',
'audio/x-pn-realaudio' => 'ram',
'application/x-rar' => 'rar',
'application/rar' => 'rar',
'application/x-rar-compressed' => 'rar',
'audio/x-pn-realaudio-plugin' => 'rpm',
'application/x-pkcs7' => 'rsa',
'text/rtf' => 'rtf',
'text/richtext' => 'rtx',
'video/vnd.rn-realvideo' => 'rv',
'application/x-stuffit' => 'sit',
'application/smil' => 'smil',
'text/srt' => 'srt',
'image/svg+xml' => 'svg',
'application/x-shockwave-flash' => 'swf',
'application/x-tar' => 'tar',
'application/x-gzip-compressed' => 'tgz',
'image/tiff' => 'tiff',
'font/ttf' => 'ttf',
'text/plain' => 'txt',
'text/x-vcard' => 'vcf',
'application/videolan' => 'vlc',
'text/vtt' => 'vtt',
'audio/x-wav' => 'wav',
'audio/wave' => 'wav',
'audio/wav' => 'wav',
'application/wbxml' => 'wbxml',
'video/webm' => 'webm',
'image/webp' => 'webp',
'audio/x-ms-wma' => 'wma',
'application/wmlc' => 'wmlc',
'video/x-ms-wmv' => 'wmv',
'video/x-ms-asf' => 'wmv',
'font/woff' => 'woff',
'font/woff2' => 'woff2',
'application/xhtml+xml' => 'xhtml',
'application/excel' => 'xl',
'application/msexcel' => 'xls',
'application/x-msexcel' => 'xls',
'application/x-ms-excel' => 'xls',
'application/x-excel' => 'xls',
'application/x-dos_ms_excel' => 'xls',
'application/xls' => 'xls',
'application/x-xls' => 'xls',
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'xlsx',
'application/vnd.ms-excel' => 'xlsx',
'application/xml' => 'xml',
'text/xml' => 'xml',
'text/xsl' => 'xsl',
'application/xspf+xml' => 'xspf',
'application/x-compress' => 'z',
'application/x-zip' => 'zip',
'application/zip' => 'zip',
'application/x-zip-compressed' => 'zip',
'application/s-compressed' => 'zip',
'multipart/x-zip' => 'zip',
'text/x-scriptzsh' => 'zsh',
];
return isset($mime_map[$mime]) ? $mime_map[$mime] : false;
}
It's very hard problem to tackle using just pure PHP. You'd have to manually manage MIME to extension mapping, as nearly all the previous answers point out.
Luckily, there's an excellent composer library that just does that for you:
composer require ralouphie/mimey
And then just:
<?php
$mimes = new \Mimey\MimeTypes;
$mimes->getExtension('application/x-font-otf'); // otf
$mimes->getAllExtensions('image/jpeg'); // array('jpeg', 'jpg', 'jpe')