htaccess Türkçe Karekter Problemi

function trsil($q) { 
$q = str_replace("ç","c",$q); 
$q = str_replace ("ç","c",$q); 
$q = str_replace ("ğ","g",$q); 
$q = str_replace ("İ","I",$q); 
$q = str_replace ("ı","i",$q); 
$q = str_replace ("ş","s",$q); 
$q = str_replace ("ö","o",$q); 
$q = str_replace ("ü","u",$q); 
$q = str_replace ("Ü","U",$q); 
$q = str_replace ("Ç","c",$q); 
$q = str_replace ("Ğ","g",$q); 
$q = str_replace ("Ş","S",$q); 
$q = str_replace ("Ö","O",$q); 
$q = str_replace (" ","_",$q); 
$q = str_replace ("'","",$q); 
return $q; 
}
        $fileurl = $siteurl."/video/".$fileid."/".$filetitle.".html";

	$filetitle = str_replace(" ","-",$filetitle);
        $filetitle = str_replace("'","_",$filetitle);
        $filetitle = str_replace("ä","a",$filetitle);
        $filetitle = str_replace("ö","o",$filetitle);
        $filetitle = str_replace("ü","u",$filetitle);
        $filetitle = str_replace("ç","c",$filetitle);
        $filetitle = str_replace("ğ","g",$filetitle);
        $filetitle = str_replace("İ","I",$filetitle);
        $filetitle = str_replace("ı","i",$filetitle);
        $filetitle = str_replace("ş","s",$filetitle);
        $filetitle = str_replace("ü","u",$filetitle);
        $filetitle = str_replace("Ü","U",$filetitle);
        $filetitle = str_replace("Ç","C",$filetitle);
        $filetitle = str_replace("Ğ","g",$filetitle);
        $filetitle = str_replace("Ş","S",$filetitle);
        $filetitle = str_replace("Ö","O",$filetitle);
        $fileurl = $siteurl."/video/".$fileid."/".$filetitle.".html";