FileEye / MimeMap

     *

     * @return string[]

     */

    public function getAliases($strict = true)

    {

        $map = MapHandler::map();

        $types = $this->buildTypesList($strict);

        // Build the array of aliases.

        $aliases = [];

        foreach ($types as $t) {

            foreach ($map->getTypeAliases($t) as $a) {

                $aliases[$a] = $a;

            }

        }

        return array_keys($aliases);

    }

    /**

     * Returns the MIME type's preferred file extension.

     *

     * @return string[]

     */

    public function getExtensions($strict = true)

    {

        $map = MapHandler::map();

        $types = $this->buildTypesList($strict);

        // Build the array of extensions.

        $extensions = [];

        foreach ($types as $t) {

            foreach ($map->getTypeExtensions($t) as $e) {

                $extensions[$e] = $e;

            }

        }

        return array_keys($extensions);

    }

}