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<?php |
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namespace IsoCodes; |
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/** |
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* @example : |
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* echo Ssn::validate('557-26-9048'); |
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* |
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* As of 2011 SSN's are completely randomized |
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* @link : http://www.socialsecurity.gov/employer/randomization.html) |
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* @source : http://haxorfreek.15.forumer.com/a/us-social-security-number-ssn-generator_post1847.html |
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* @source : https://gist.github.com/Kryptonit3/7b6bff5abab4a62e2b796a0e5a9ab94e |
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* |
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* Some special numbers are never allocated: |
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* Numbers with all zeros in any digit group (000-##-####, ###-00-####, ###-##-0000).[36][37] |
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* Numbers with 666 or 900–999 (Individual Taxpayer Identification Number) in the first digit group.[36] |
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* special cases to care bout: |
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* @link : https://stackoverflow.com/questions/1517026/how-can-i-validate-us-social-security-number/18385786#18385786 |
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*/ |
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class Ssn implements IsoCodeInterface |
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{ |
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/** |
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* SSN validation. |
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* |
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* @param string $ssn |
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* |
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* @return bool |
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*/ |
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public static function validate($ssn) |
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{ |
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$ssn = trim($ssn); |
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// Must be in format AAA-GG-SSSS or AAAGGSSSS |
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if (!preg_match("/^([0-9]{9}|[0-9]{3}-[0-9]{2}-[0-9]{4})$/", $ssn)) { |
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return false; |
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} |
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$forbidden = [ |
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'078-051-120', // Woolworth Wallet Fiasco |
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'219-099-999' // Was used in an ad by the Social Security Administration |
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]; |
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if (in_array($ssn, $forbidden)) { |
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return false; |
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} |
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$ssnFormatted = (strlen($ssn) == 9) ? preg_replace("/^([0-9]{3})([0-9]{2})([0-9]{4})$/", "$1-$2-$3", $ssn) : $ssn; |
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$ssn_array = explode('-', $ssnFormatted); |
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// number groups must follow these rules: |
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// * no single group can have all 0's |
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// * first group cannot be 666, 900-999 |
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// * second group must be 01-99 |
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// * third group must be 0001-9999 |
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foreach ($ssn_array as $group) { |
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if ($group == 0) { |
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return false; |
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} |
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} |
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// Forbidden numbers |
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return !($ssn_array[0] == 666 || $ssn_array[0] === '000' || $ssn_array[0] > 899); |
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} |
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} |
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ronanguilloux /
IsoCodes
