Check PHP files for PHP functions that contain BOMs

<?php/* detects and clears bom*/if (Isset ($_get[' dir ')) {$basedir =$_get[' dir '];} else{$basedir = '. ';} $auto = 1;checkdir ($basedir), function Checkdir ($basedir) {if ($dh = Opendir ($basedir)) {while ($file = Readdir ($d h))!== false) {if ($file! = '. ' && $file! = ' ... ') {if (!is_dir ($basedir. ")                /". $file)" {echo "filename: $basedir/$file". Checkbom ("$basedir/$file"). "<br>"; }else{$dirname = $basedir. "                    /". $file;                Checkdir ($dirname);    }}}//end while Closedir ($DH);    }//end if ($dh}//end functionfunction Checkbom ($filename) {global $auto;    $contents = file_get_contents ($filename);    $charset [1] = substr ($contents, 0, 1);    $charset [2] = substr ($contents, 1, 1);    $charset [3] = substr ($contents, 2, 1);            if (Ord ($charset [1]) = = 239 && ord ($charset [2]) = = 187 && ord ($charset [3]) = = 191) {if ($auto = = 1) { $rEST = substr ($contents, 3);            Rewrite ($filename, $rest);        Return "<font Color=red>bom found, automatically removed.</font>";        }else{return ("<font Color=red>bom found.</font>"); }} else return ("BOM not Found.");}    End Functionfunction Rewrite ($filename, $data) {$filenum = fopen ($filename, "w");    Flock ($filenum, LOCK_EX);    Fwrite ($filenum, $data); Fclose ($filenum);} End Function?>

Check php files for PHP functions that contain BOMs