Kan du oversætte dette til PHP?

Java kode 

 public static QStringBuffer encodeString(QStringBuffer qstringbuffer, String s)
     {
         if(s == null)
             return qstringbuffer;
         for(int k = 0; k < s.length(); k++)
         {
             char c = s.charAt(k);
             if(c < ' ' || c > '\177' || c == '*' || c == '&' || c == ',' || c == quotechar)
             {
                 qstringbuffer.append('&');
                 int i = c;
                 for(int l = 0; l < 4; l++)
                 {
                     int j = (i & 0xf000) >> 12;
                     qstringbuffer.append((char)(65 + j));
                     i <<= 4;
                 }
 
             } else
             {
                 qstringbuffer.append(c);
             }
         }
 
         return qstringbuffer;
     }

PHP kode 

 private function encodeFuck($s) {
 $stringbuffer = "32";
 for($k = 0; $k < strlen($s); $k++){
     $c = $s{$k};
       if($c < ' ' || $c > '\177' || $c == '*' || $c == '&' || $c == ',' || $c == "'".chr(0)){
                 $stringbuffer .= "&";
                 $i = $c;
                 for($l = 0; $l < 4; $l++){
                     $j = ($i & 0xf000) >> 12;
                     
                     $stringbuffer.= chr(65 + $j);
                     
                     $i <<= 4;
                     
             }
             
             } else {
                 $stringbuffer.=$c;
             }
         
 }
         return $stringbuffer;
     
 }