Файлы пользователей. Добавление иконок.

public function fileIcon($filename){
        $standart_icon = 'file.gif';
        $ftypes[0]['ext'] = 'avi mpeg mpg mp4 flv divx xvid vob';
        $ftypes[0]['icon'] = 'video.gif';
        $ftypes[1]['ext'] = 'mp3 ogg wav';
        $ftypes[1]['icon'] = 'audio.gif';
        $ftypes[2]['ext'] = 'zip rar gz arj 7zip';
        $ftypes[2]['icon'] = 'archive.gif';
        $ftypes[3]['ext'] = 'zip rar gz arj 7zip';
        $ftypes[3]['icon'] = 'archive.gif';
        $ftypes[4]['ext'] = 'gif jpg jpeg png bmp pcx wmf cdr ai';
        $ftypes[4]['icon'] = 'image.gif';
        $ftypes[5]['ext'] = 'pdf djvu';
        $ftypes[5]['icon'] = 'pdf.gif';
        $ftypes[6]['ext'] = 'doc docx';
        $ftypes[6]['icon'] = 'word.gif';
        $ftypes[7]['ext'] = 'iso mds mdf 000';
        $ftypes[7]['icon'] = 'cd.gif';
		$ftypes[8]['ext'] = 'xls xlsx';
        $ftypes[8]['icon'] = 'excel.gif';