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Rev 113 Rev 121
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            return true;
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            return true;
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        }
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        }
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    }
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    }
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    public static function GTINCalcCheckDigit($p_sGTINCode) {
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    public static function GTINCalcCheckDigit($p_sGTINCode) {
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        $p_sGTINCode = (string)trim($p_sGTINCode);
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        if (preg_match('/[^0-9]/', $p_sGTINCode)) return false;
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        $p_sGTINCode .= '0';
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        $p_sGTINCode .= '0';
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        $sGTINCode = trim($p_sGTINCode);
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        $sGTINCode = trim($p_sGTINCode);
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        $length = strlen($sGTINCode);
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        $length = strlen($sGTINCode);
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        if (($length > 11 && $length <= 14) || $length == 8) {
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        if (($length > 11 && $length <= 14) || $length == 8) {
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            $zeroes = 18 - $length;
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            $zeroes = 18 - $length;