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<?php |
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namespace LeKoala\Tin\Algo; |
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use LeKoala\Tin\Util\DateUtil; |
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use LeKoala\Tin\Util\StringUtil; |
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/** |
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* Denmark |
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*/ |
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class DKAlgorithm extends TINAlgorithm |
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{ |
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const LENGTH = 10; |
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const PATTERN = "[0-3]\\d[0-1]\\d{3}\\d{4}"; |
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public function validate(string $tin) |
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{ |
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$whithoutHyphen = str_replace("-", "", $tin); |
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if (!$this->isFollowLength($whithoutHyphen)) { |
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return StatusCode::INVALID_LENGTH; |
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} |
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if (!$this->isFollowPattern($whithoutHyphen) || !$this->isValidDate($whithoutHyphen)) { |
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return StatusCode::INVALID_PATTERN; |
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} |
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if (!$this->isFollowRules($whithoutHyphen)) { |
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return StatusCode::INVALID_SYNTAX; |
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} |
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return StatusCode::VALID; |
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} |
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public function isFollowLength(string $tin) |
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{ |
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return StringUtil::isFollowLength($tin, self::LENGTH); |
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} |
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public function isFollowPattern(string $tin) |
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{ |
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return StringUtil::isFollowPattern($tin, self::PATTERN); |
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} |
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public function isFollowRules(string $tin) |
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{ |
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return $this->isFollowDenmarkRule($tin); |
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} |
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/** |
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* @link https://cpr.dk/cpr-systemet/personnumre-uden-kontrolciffer-modulus-11-kontrol/ |
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* |
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* The CPR office has since 2007 given out social security numbers without the so called modulus 11 control. |
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* The social security numbers without modulus 11 are completely valid |
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* and are given out, as some birth years no longer have the capacity to provide them with modulus 11 control. |
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* |
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* We should not check modulus 11 control for the following birthdays: |
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* |
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* 1st of januar 1960 |
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* 1st of januar 1964 |
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* 1st of januar 1965 |
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* 1st of januar 1966 |
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* 1st of januar 1969 |
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* 1st of januar 1970 |
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* 1st of januar 1974 |
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* 1st of januar 1980 |
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* 1st of januar 1982 |
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* 1st of januar 1984 |
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* 1st of januar 1985 |
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* 1st of januar 1986 |
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* 1st of januar 1987 |
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* 1st of januar 1988 |
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* 1st of januar 1989 |
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* 1st of januar 1990 |
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* 1st of januar 1991 |
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* 1st of januar 1992 |
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* |
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* @param string $tin |
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* @return boolean |
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*/ |
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public function isFollowDenmarkRule(string $tin) |
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{ |
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$serialNumber = intval(StringUtil::substring($tin, 6, 10)); |
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$dayOfBirth = intval(StringUtil::substring($tin, 0, 2)); |
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$monthOfBirth = intval(StringUtil::substring($tin, 2, 4)); |
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$yearOfBirth = intval(StringUtil::substring($tin, 4, 6)); |
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if ($yearOfBirth >= 37 && $yearOfBirth <= 57 && $serialNumber >= 5000 && $serialNumber <= 8999) { |
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return false; |
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} |
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$excludedYears = [60, 64, 65, 66, 69, 70, 74, 80, 82, 84, 85, 86, 87, 88, 89, 90, 91, 92]; |
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if ($dayOfBirth == 1 && $monthOfBirth == 1 && in_array($yearOfBirth, $excludedYears)) { |
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return true; |
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} |
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$c1 = StringUtil::digitAt($tin, 0); |
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$c2 = StringUtil::digitAt($tin, 1); |
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$c3 = StringUtil::digitAt($tin, 2); |
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$c4 = StringUtil::digitAt($tin, 3); |
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$c5 = StringUtil::digitAt($tin, 4); |
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$c6 = StringUtil::digitAt($tin, 5); |
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$c7 = StringUtil::digitAt($tin, 6); |
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$c8 = StringUtil::digitAt($tin, 7); |
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$c9 = StringUtil::digitAt($tin, 8); |
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$c10 = StringUtil::digitAt($tin, 9); |
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$sum = $c1 * 4 + $c2 * 3 + $c3 * 2 + $c4 * 7 + $c5 * 6 + $c6 * 5 + $c7 * 4 + $c8 * 3 + $c9 * 2; |
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$remainderBy11 = $sum % 11; |
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if ($remainderBy11 == 1) { |
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return false; |
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} |
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if ($remainderBy11 == 0) { |
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return $c10 == 0; |
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} |
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return $c10 == 11 - $remainderBy11; |
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} |
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private function isValidDate(string $tin) |
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{ |
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$day = intval(StringUtil::substring($tin, 0, 2)); |
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$month = intval(StringUtil::substring($tin, 2, 4)); |
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$year = intval(StringUtil::substring($tin, 4, 6)); |
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return DateUtil::validate(1900 + $year, $month, $day) || DateUtil::validate(2000 + $year, $month, $day); |
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} |
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} |
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lekoala /
tin
