Reputation: 7396
Is there a quick and dirty mapping of MIME types to extensions in PHP that I can make use of?
Upvotes: 26
Views: 28387
Reputation: 3860
use this file : https://github.com/ralouphie/mimey/blob/develop/mime.types.php
like this :
$mimes=include('mime.types.php');
or copy content:
$mime= array (
'mimes' =>
array (
'ez' =>
array (
0 => 'application/andrew-inset',
),
'aw' =>
array (
0 => 'application/applixware',
),
'atom' =>
array (
0 => 'application/atom+xml',
),
'atomcat' =>
array (
0 => 'application/atomcat+xml',
)
...
and an example of getting from a stream:
$finfo = new \finfo(FILEINFO_MIME_TYPE);
$mime=$finfo->buffer($data);
$mimes=include(__DIR__."/mime.types.php");
echo ($mime); //mime
echo ($mimes['extensions'][$mime]); // file extension
Upvotes: 0
Reputation: 4987
You might want to use this library: https://github.com/ralouphie/mimey
Example usage:
$mimes = new \Mimey\MimeTypes;
// Convert extension to MIME type:
$mimes->getMimeType('json'); // application/json
// Convert MIME type to extension:
$mimes->getExtension('application/json'); // json
This because apparently the quality of the provided PHP functions is dubious.
Upvotes: 4
Reputation: 7468
If you are working with vary limited extensions of images and need something very simple, I think this is enough.
switch($info['mime'])
{
case 'image/gif' : $extension = 'gif'; break;
case 'image/png' : $extension = 'png'; break;
case 'image/jpeg' : $extension = 'jpg'; break;
default :
throw new ApplicationException('The file uploaded was not a valid image file.');
break;
}
Upvotes: 2
Reputation: 2317
You could use mime_content_type
but it is deprecated. Use fileinfo
instead:
function getMimeType($filename) {
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime = finfo_file($finfo, $filename);
finfo_close($finfo);
return $mime;
}
Upvotes: 5
Reputation: 124297
Not built-in, but it's not terribly hard to roll your own:
function system_extension_mime_types() {
# Returns the system MIME type mapping of extensions to MIME types, as defined in /etc/mime.types.
$out = array();
$file = fopen('/etc/mime.types', 'r');
while(($line = fgets($file)) !== false) {
$line = trim(preg_replace('/#.*/', '', $line));
if(!$line)
continue;
$parts = preg_split('/\s+/', $line);
if(count($parts) == 1)
continue;
$type = array_shift($parts);
foreach($parts as $part)
$out[$part] = $type;
}
fclose($file);
return $out;
}
function system_extension_mime_type($file) {
# Returns the system MIME type (as defined in /etc/mime.types) for the filename specified.
#
# $file - the filename to examine
static $types;
if(!isset($types))
$types = system_extension_mime_types();
$ext = pathinfo($file, PATHINFO_EXTENSION);
if(!$ext)
$ext = $file;
$ext = strtolower($ext);
return isset($types[$ext]) ? $types[$ext] : null;
}
function system_mime_type_extensions() {
# Returns the system MIME type mapping of MIME types to extensions, as defined in /etc/mime.types (considering the first
# extension listed to be canonical).
$out = array();
$file = fopen('/etc/mime.types', 'r');
while(($line = fgets($file)) !== false) {
$line = trim(preg_replace('/#.*/', '', $line));
if(!$line)
continue;
$parts = preg_split('/\s+/', $line);
if(count($parts) == 1)
continue;
$type = array_shift($parts);
if(!isset($out[$type]))
$out[$type] = array_shift($parts);
}
fclose($file);
return $out;
}
function system_mime_type_extension($type) {
# Returns the canonical file extension for the MIME type specified, as defined in /etc/mime.types (considering the first
# extension listed to be canonical).
#
# $type - the MIME type
static $exts;
if(!isset($exts))
$exts = system_mime_type_extensions();
return isset($exts[$type]) ? $exts[$type] : null;
}
Upvotes: 23