Estensioni file

[Thinker]

Ciao a tutti e Buona pasqua!
Ho un piccolo problema ma non capisco quale sia l'errore, questo è il codice:

$estraggo = preg_match_all("/^.*(\..*)$/",$basename_nospace,$matches); 
$extension_normal = $matches[1][0]; 
$extension = strtolower($extension_normal); 
 
$typeofile = "other"; 

//Immagini
//*.bmp;*.gif;*.jpeg;*.jpg;*.pict;*.png;*.tga;*.tiff;*.djvu;*.pcx;*.cpd;*.jpd;*.gpd;*.ico;
if($extension == ".bmp"){ $typeofile = "image"; } 
elseif($extension == ".gif"){ $typeofile = "image"; } 
elseif($extension == ".jpeg"){ $typeofile = "image"; } 
elseif($extension == ".jpg"){ $typeofile = "image"; } 
elseif($extension == ".pict"){ $typeofile = "image"; } 
elseif($extension == ".png"){ $typeofile = "image"; }
elseif($extension == ".tga"){ $typeofile = "image"; }
elseif($extension == ".tiff"){ $typeofile = "image"; }
elseif($extension == ".djvu"){ $typeofile = "image"; }
elseif($extension == ".pcx"){ $typeofile = "image"; }
elseif($extension == ".cpd"){ $typeofile = "image"; }
elseif($extension == ".jpd"){ $typeofile = "image"; } 
elseif($extension == ".ico"){ $typeofile = "image"; } 
//Video
//*.3gp;*.asf;*.avi;*.divx;*.mpeg;*.mp4v;*.ogm;*.wmv;*.f4v;*.mp4;*.mov;*.mkv;*.rm;*.vob;*.svi;
elseif($extension == ".3gp"){ $typeofile = "video"; } 
elseif($extension == ".asf"){ $typeofile = "video"; } 
elseif($extension == ".avi"){ $typeofile = "video"; } 
elseif($extension == ".divx"){ $typeofile = "video"; } 
elseif($extension == ".mpeg"){ $typeofile = "video"; } 
elseif($extension == ".mp4v"){ $typeofile = "video"; } 
elseif($extension == ".ogm"){ $typeofile = "video"; } 
elseif($extension == ".wmv"){ $typeofile = "video"; } 
elseif($extension == ".f4v"){ $typeofile = "video"; } 
elseif($extension == ".mp4"){ $typeofile = "video"; } 
elseif($extension == ".mov"){ $typeofile = "video"; } 
elseif($extension == ".mkv"){ $typeofile = "video"; } 
elseif($extension == ".rm"){ $typeofile = "video"; } 
elseif($extension == ".rm"){ $typeofile = "video"; } 
elseif($extension == ".vob"){ $typeofile = "video"; } 
elseif($extension == ".svi"){ $typeofile = "video"; } 
//Audio
//*.aac;*.ac3;*.aiff;*.amr;*.bwf;*.cda;*.flac;*.iff;*.mid;*.mka;*.mp1;*.mp2;*.mp3;*.m4a;*.riff;*.pca;*.ra;*.rm;*.ogg;*.wav;*.wma;*.xm;
elseif($extension == ".aac"){ $typeofile == "audio"; } 
elseif($extension == ".ac3"){ $typeofile == "audio"; }
elseif($extension == ".aiff"){ $typeofile == "audio"; }
elseif($extension == ".amr"){ $typeofile == "audio"; }
elseif($extension == ".bwf"){ $typeofile == "audio"; }
elseif($extension == ".cda"){ $typeofile == "audio"; }
elseif($extension == ".flac"){ $typeofile == "audio"; }
elseif($extension == ".iff"){ $typeofile == "audio"; }
elseif($extension == ".mid"){ $typeofile == "audio"; }
elseif($extension == ".mka"){ $typeofile == "audio"; }
elseif($extension == ".mp1"){ $typeofile == "audio"; }
elseif($extension == ".mp2"){ $typeofile == "audio"; } 
elseif($extension == ".mp3"){ $typeofile == "audio"; }
elseif($extension == ".mp3"){ $typeofile == "audio"; }
elseif($extension == ".m4a"){ $typeofile == "audio"; }
elseif($extension == ".riff"){ $typeofile == "audio"; }
elseif($extension == ".pca"){ $typeofile == "audio"; }
elseif($extension == ".ra"){ $typeofile == "audio"; }
elseif($extension == ".ac"){ $typeofile == "audio"; }
elseif($extension == ".rm"){ $typeofile == "audio"; }
elseif($extension == ".ogg"){ $typeofile == "audio"; }
elseif($extension == ".wav"){ $typeofile == "audio"; }
elseif($extension == ".wma"){ $typeofile == "audio"; }
elseif($extension == ".xm"){ $typeofile == "audio"; } 
//Grafica vettoriale
//*.ai;*.cdr;*.drv;*.dgn;*.dwg;*.dxf;*.edwr;*.flt;*.fla;*.igs;*.flp;*.par;*.prt;*.sat;*.stl;*.svg;*.pln;*.pla;*.c4d;*.psd;*.flv;*.swf;
elseif($extension == ".ai"){ $typeofile == "illustrator"; } 
elseif($extension == ".cdr"){ $typeofile == "vector"; }
elseif($extension == ".drv"){ $typeofile == "vector"; }
elseif($extension == ".dgn"){ $typeofile == "vector"; }
elseif($extension == ".dwg"){ $typeofile == "vector"; }
elseif($extension == ".dxf"){ $typeofile == "vector"; }
elseif($extension == ".edwr"){ $typeofile == "vector"; }
elseif($extension == ".flt"){ $typeofile == "vector"; }
elseif($extension == ".fla"){ $typeofile == "flash"; }
elseif($extension == ".flv"){ $typeofile = "flash"; } 
elseif($extension == ".swf"){ $typeofile = "flash"; } 
elseif($extension == ".igs"){ $typeofile == "vector"; }
elseif($extension == ".flp"){ $typeofile == "vector"; }
elseif($extension == ".par"){ $typeofile == "vector"; }
elseif($extension == ".prt"){ $typeofile == "vector"; }
elseif($extension == ".sat"){ $typeofile == "vector"; }
elseif($extension == ".stl"){ $typeofile == "vector"; }
elseif($extension == ".svg"){ $typeofile == "vector"; }
elseif($extension == ".pln"){ $typeofile == "vector"; }
elseif($extension == ".pla"){ $typeofile == "vector"; }
elseif($extension == ".c4d"){ $typeofile == "3d"; }
elseif($extension == ".psd"){ $typeofile == "photoshop"; }
//File compressi
//*.bz2;*.gz;*.tar;*.zip;*.jar;*.rar;*.7z;*.ace;*.arj;*.arc;*.cab;*.bin;*.hqx;*.iso;*.lha;*.mdf;*.sit;*.zoo;*.toast;*.sitx;*.torrent;*.ctt;
elseif($extension == ".bz2"){ $typeofile == "archive"; }
elseif($extension == ".gz"){ $typeofile == "archive"; }
elseif($extension == ".tar"){ $typeofile == "archive"; }
elseif($extension == ".zip"){ $typeofile == "archive"; }
elseif($extension == ".jar"){ $typeofile == "archive"; }
elseif($extension == ".rar"){ $typeofile == "archive"; }
elseif($extension == ".7z"){ $typeofile == "archive"; }
elseif($extension == ".ace"){ $typeofile == "archive"; }
elseif($extension == ".arj"){ $typeofile == "archive"; }
elseif($extension == ".arc"){ $typeofile == "archive"; }
elseif($extension == ".cab"){ $typeofile == "archive"; }
elseif($extension == ".bin"){ $typeofile == "archive"; }
elseif($extension == ".hqx"){ $typeofile == "archive"; }
elseif($extension == ".iso"){ $typeofile == "archive"; }
elseif($extension == ".lha"){ $typeofile == "archive"; }
elseif($extension == ".mdf"){ $typeofile == "archive"; }
elseif($extension == ".sit"){ $typeofile == "archive"; }
elseif($extension == ".zoo"){ $typeofile == "archive"; }
elseif($extension == ".toast"){ $typeofile == "archive"; }
elseif($extension == ".sitx"){ $typeofile == "archive"; }
elseif($extension == ".torrent"){ $typeofile == "torrent"; }
elseif($extension == ".ctt"){ $typeofile == "msn"; } //MSN Messenger contact list
//Documenti
//*.csv;*.txt;*.sgml;*.tex;*.ltx;*.pdf;*.rtf;*.xls;*.cwk;*.doc;*.ppt;*.docx;*.xlsx;*.pptx;
elseif($extension == ".csv"){ $typeofile == "text"; }
elseif($extension == ".txt"){ $typeofile == "text"; }
elseif($extension == ".sgml"){ $typeofile == "text"; }
elseif($extension == ".tex"){ $typeofile == "text"; }
elseif($extension == ".ltx"){ $typeofile == "text"; }
elseif($extension == ".rtf"){ $typeofile == "text"; }
elseif($extension == ".pdf"){ $typeofile == "text"; }
elseif($extension == ".xls"){ $typeofile == "text"; }
elseif($extension == ".cwk"){ $typeofile == "text"; }
elseif($extension == ".doc"){ $typeofile == "office"; }
elseif($extension == ".ppt"){ $typeofile == "office"; }
elseif($extension == ".docx"){ $typeofile == "office"; }
elseif($extension == ".xlsx"){ $typeofile == "office"; }
elseif($extension == ".pptx"){ $typeofile == "office"; }
//App
//*.dmg;*.exe;*.app;*.ipa;
elseif($extension == ".dmg"){ $typeofile == "mac"; }
elseif($extension == ".exe"){ $typeofile == "windows"; }
elseif($extension == ".app"){ $typeofile == "mac"; }
elseif($extension == ".ipa"){ $typeofile == "ipod"; }
else{ $typeofile = "other"; } 
/*END*/ 

In breve, analizzo l'estensione del file e la classifico. Il problema è che funziona solo fino ai video, se carico una canzone, un file compresso o un semplice file di testo me lo classifica come other ._.
Qualcuno potrebbe aiutarmi?

Grazie in anticipo
Alex