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                        class location {
     private $url;
 
 
     function __construct($url) {
         $this->url = $url;
         $this->ruDecode();
     }
 
     private function ruIeConv($m) {
         $a1 = base_convert($m[1], 16, 10);
         $a2 = base_convert($m[2], 16, 10);
         # мальнькие буквы
         if($a1 == 208 && $a2 >= 176 && $a2 <= 191) return chr($a2+48);
         if($a1 == 209 && $a2 >= 128 && $a2 <= 143) return chr($a2+112);
         if($a1 == 209 && $a2 == 145) return 'ё';
         # большие
         if($a1 == 208 && $a2 >= 144 && $a2 <= 175) return chr($a2+48);
         if($a1 == 208 && $a2 == 129) return 'Ё';
         return $m[0];
     }
 
 
     private function ruFfConv($m) {
         return chr(base_convert($m[1], 16, 10));
     }
 
 
     private function ruDecode() {
         $this->url = str_replace('%20', ' ', $this->url);
         $this->url = preg_replace_callback('~%(D[01])%([0-9A-F]{2})~i', array($this, 'ruIeConv'), $this->url);
         $this->url = preg_replace_callback('~%([A-F][A-F0-9])~i',      array($this, 'ruFfConv'), $this->url);
     }
 
 
     function __toString() {
         return $this->url;
     }
 }
 echo new location('%D1%82%D0%B5%D0%B3%D0%B8'); // теги (windows-1251)
                                 
        
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