46         public static function format($messages, $number)
 47         {
 48                 $n=preg_match_all('/\s*([^#]*)\s*#([^\|]*)\|/',$messages.'|',$matches);
 49                 if($n===0)
 50                         return $messages;
 51                 for($i=0;$i<$n;++$i)
 52                 {
 53                         $expression=$matches[1][$i];
 54                         $message=$matches[2][$i];
 55                         if($expression===(string)(int)$expression)
 56                         {
 57                                 if($expression==$number)
 58                                         return $message;
 59                         }
 60                         elseif(self::evaluate(str_replace('n','$n',$expression),$number))
 61                                 return $message;
 62                 }
 63                 return $message; // return the last choice
 64         }