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<?php |
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namespace Kontrolio\Rules\Core; |
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use Kontrolio\Rules\AbstractRule; |
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class Inn extends AbstractRule |
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{ |
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/** |
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* Validates input. |
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* |
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* @param mixed $input |
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* |
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* @return bool |
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*/ |
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public function isValid($input = null) |
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{ |
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if (!is_numeric($input)) { |
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$this->violations[] = 'numeric'; |
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return false; |
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} |
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$input = (string) $input; |
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switch (strlen($input)) { |
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case 10: |
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return $this->validateTenDigits($input); |
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case 12: |
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return $this->validateTwelveDigits($input); |
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default: |
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$this->violations[] = 'length'; |
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return false; |
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} |
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} |
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/** |
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* Validates ten digits INN. |
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* |
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* @param string $input |
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* |
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* @return bool |
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*/ |
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protected function validateTenDigits($input) |
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{ |
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$factor = [2, 4, 10, 3, 5, 9, 4, 6, 8, 0]; |
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$index = 0; |
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$checksum = 0; |
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while ($index <= 9) { |
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$checksum = $checksum + intval($input[$index]) * $factor[$index]; |
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$index++; |
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} |
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$value = $checksum % 11; |
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if ($value > 9) { |
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$value = $value % 10; |
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} |
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return $input[9] == $value; |
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} |
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protected function validateTwelveDigits($input) |
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{ |
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$factor = [3, 7, 2, 4, 10, 3, 5, 9, 4, 6, 8, 0]; |
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$index = 0; |
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$checksum = 0; |
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while ($index <= 10) { |
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$checksum = $checksum + intval($input[$index]) * $factor[$index + 1]; |
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$index++; |
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} |
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$value = $checksum % 11; |
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if ($value > 9) { |
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$value = $value % 10; |
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} |
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$index = 0; |
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$checksum2 = 0; |
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while ($index <= 11) { |
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$checksum2 = $checksum2 + intval($input[$index]) * $factor[$index]; |
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$index++; |
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} |
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$value2 = $checksum2 % 11; |
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if ($value2 > 9) { |
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$value2 = $value2 % 10; |
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} |
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return $input[10] == $value && $input[11] == $value2; |
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} |
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} |
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franzose /
kontrolio
