mambax7 / bookshop

		}

		$ret = 0;

		for ($i=0;$i<$len;$i++) {

			if ((ord($this->mValue[$i])<48) || (ord($this->mValue[$i])>57)) {

				$this->mError = "Code-128C is numeric only";

				return false;

			}

		}

		if (($len%2) != 0) {

			$this->mError = "The length of barcode value must be even.  You must pad the number with zeros.";

			return false;

		}

		for ($i=0;$i<$len;$i++) {

			if ((ord($this->mValue[$i])<48) || (ord($this->mValue[$i])>57)) {

				$this->mError = "I25 is numeric only";

				return false;

			}

		}

		if (($len%2) != 0) {

			$this->mError = "The length of barcode value must be even";