Method maximumWords

text-to-qr/lib/phpqrcode/phpqrcode.php:464–485

----------------------------------------------------------------------

($mode, $version)

        
        //----------------------------------------------------------------------
        public static function maximumWords($mode, $version)
        {
            if($mode == QR_MODE_STRUCTURE) 
                return 3;
                
            if($version <= 9) {
                $l = 0;
            } else if($version <= 26) {
                $l = 1;
            } else {
                $l = 2;
            }

            $bits = self::$lengthTableBits[$mode][$l];
            $words = (1 << $bits) - 1;
            
            if($mode == QR_MODE_KANJI) {
                $words *= 2; // the number of bytes is required
            }

            return $words;
        }

        // Error correction code -----------------------------------------------
        // Table of the error correction code (Reed-Solomon block)