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* * For the full copyright and license information, please view the "LICENSE.md" * file that was distributed with this source code. */ namespace Respect\Validation\Rules; class Cpf extends AbstractRule { public function validate($input) { // Code ported from jsfromhell.com $c = preg_replace('/\D/', '', $input); if (strlen($c) != 11 || preg_match("/^{$c[0]}{11}$/", $c)) { return false; } for ($s = 10, $n = 0, $i = 0; $s >= 2; $n += $c[$i++] * $s--); if ($c[9] != ((($n %= 11) < 2) ? 0 : 11 - $n)) { return false; } for ($s = 11, $n = 0, $i = 0; $s >= 2; $n += $c[$i++] * $s--); if ($c[10] != ((($n %= 11) < 2) ? 0 : 11 - $n)) { return false; } return true; } }