public function decode($string)
    {
        $decoded = '';
        $string = preg_replace("/[^{$this->charset}]/", '', rtrim(strtoupper($string), $this->charset[32]));

        if ($string) {
            $binString = '';
            foreach (str_split($string) as $char) {
                $binString .= str_pad(decbin(strpos($this->charset, $char)), 5, 0, STR_PAD_LEFT);
            }
            $binString = substr($binString, 0, (floor(strlen($binString) / 8) * 8));

            foreach (str_split($binString, 8) as $chunk) {
                $chunk = str_pad($chunk, 8, 0, STR_PAD_RIGHT);
                $decoded .= chr(bindec($chunk));
            }
        }

        return $decoded;
    }
public function decode($string)
    {
        $decoded = '';
        $string = preg_replace("/[^{$this->charset}]/", '', rtrim(strtoupper($string), $this->charset[32]));

        if ($string) {
            $binString = '';
            foreach (str_split($string) as $char) {
                $binString .= str_pad(decbin(strpos($this->charset, $char)), 5, 0, STR_PAD_LEFT);
            }
            $binString = substr($binString, 0, (floor(strlen($binString) / 8) * 8));

            foreach (str_split($binString, 8) as $chunk) {
                $chunk = str_pad($chunk, 8, 0, STR_PAD_RIGHT);
                $decoded .= chr(bindec($chunk));
            }
        }

        return $decoded;
    }
public function decode ( $ string ) { $ decoded = '' ; $ string = preg_replace ( "/[^{$this->charset}]/" , '' , rtrim ( strtoupper ( $ string ) , $ this -> charset [ 32 ] ) ) ; if ( $ string ) { $ binString = '' ; foreach ( str_split ( $ string ) as $ char ) { $ binString .= str_pad ( decbin ( strpos ( $ this -> charset , $ char ) ) , 5 , 0 , STR_PAD_LEFT ) ; } $ binString = substr ( $ binString , 0 , ( floor ( strlen ( $ binString ) / 8 ) * 8 ) ) ; foreach ( str_split ( $ binString , 8 ) as $ chunk ) { $ chunk = str_pad ( $ chunk , 8 , 0 , STR_PAD_RIGHT ) ; $ decoded .= chr ( bindec ( $ chunk ) ) ; } } return $ decoded ; }
Decode an encoded string.

@param  string $string
@return string
Decode an encoded string .