Is there a quick and dirty mapping of MIME types to extensions in PHP that I can make use of?
+7
A:
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;
}
chaos
2009-07-18 16:29:25
Very cool! Thanks!
Omega
2009-07-18 16:46:40
A:
If you want to use a webservice, I just created this as part of my mimetype <-> icon service
For example :
It runs on appengine so it should have high availability.
Paul Tarjan
2009-08-19 08:15:39