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<?php namespace Serima\MyNumber; |
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class MyNumber |
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{ |
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/** |
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* Check the number of digits. |
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* Pass the number as string, if starting letter is beginning zero. |
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* |
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* @param integer|string $number |
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* @param integer $digit |
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* @return bool |
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*/ |
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public static function checkLength($number, $digit) |
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{ |
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if (strlen($number) !== $digit || strspn($number, '1234567890') !== $digit) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Verify personal MyNumber. |
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* Pass the number as string, if starting letter is beginning zero. |
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* |
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* @param integer|string $number |
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* @return bool |
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* @link http://law.e-gov.go.jp/announce/H26F11001000085.html |
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*/ |
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public static function verifyPersonal($number) |
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{ |
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if (false === self::checkLength($number, 12)) { |
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return false; |
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} |
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$sum = 0; |
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for ($i = 1; $i <= 11; $i++) { |
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$m = (int)substr($number, 11 - $i, 1); |
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$n = ($i <= 6) ? $i + 1 : $i - 5; |
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$sum += $m * $n; |
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} |
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$mod = $sum % 11; |
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if ($mod <= 1) { |
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return ((int)substr($number, 11, 1) === 0); |
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} |
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return ((int)substr($number, 11, 1) === 11 - $mod); |
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} |
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/** |
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* Verify company MyNumber. |
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* Pass the number as string, if starting letter is beginning zero. |
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* |
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* @param integer|string $number |
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* @return bool |
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* @link http://law.e-gov.go.jp/announce/H26F14001000070.html |
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*/ |
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public static function verifyCompany($number) |
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{ |
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if (false === self::checkLength($number, 13)) { |
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return false; |
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} |
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$sum = 0; |
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for ($i = 1; $i <= 12; $i++) { |
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$m = (int)substr($number, 12 - $i, 1); |
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$n = ($i % 2 === 0) ? 2 : 1; |
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$sum += $m * $n; |
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} |
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$mod = $sum % 9; |
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return ((int)substr($number, 12, 1) === 9 - $mod); |
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} |
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} |
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serima /
MyNumber
