public function BrazilianIdsService::validateCpf in Brazilian IDs 8

Validates CPF numbers.

Parameters

string $value: The value of the CPF number to be validated.

array $error: If provided, it is filled with the error message at $error['message'] if any.

Return value

bool Returns TRUE if the CPF number is valid. Otherwise, returns FALSE.

Overrides BrazilianIdsServiceInterface::validateCpf

1 call to BrazilianIdsService::validateCpf()

BrazilianIdsService::validateCpfCnpj in src/BrazilianIdsService.php

Validates CPF or CNPJ numbers depending on the number of digits.

File

src/BrazilianIdsService.php, line 24

Class

BrazilianIdsService

Provides validation functionalities for Brazilian IDs numbers.

Namespace

Drupal\brazilian_ids

Code

public function validateCpf($value, array &$error = []) {
  $is_valid = FALSE;
  if (isset($value) && $value !== '') {
    $forbidden = array(
      '00000000000',
      '11111111111',
      '22222222222',
      '33333333333',
      '44444444444',
      '55555555555',
      '66666666666',
      '77777777777',
      '88888888888',
      '99999999999',
    );

    // Checks if the value has the correct number of digits and is none of
    // the forbidden values.
    if (!preg_match('/^[0-9]{11}$/', $value)) {
      $error['message'] = $this
        ->t('CPF must be a 11-digit number.');
    }
    elseif (in_array($value, $forbidden)) {
      $error['message'] = $this
        ->t('CPF cannot be a sequence of the same digit only.');
    }
    else {

      // Checks the verification digits.
      $valid_number = substr($value, 0, 9);
      for ($computed_digits = 0; $computed_digits < 2; $computed_digits++) {
        $sum = 0;
        $n = 11 + $computed_digits;
        for ($i = 0; $i < 9 + $computed_digits; $i++) {
          $sum += --$n * substr($valid_number, $i, 1);
        }
        $reminder = $sum % 11;
        $valid_number .= $reminder < 2 ? 0 : 11 - $reminder;
      }
      if (!($is_valid = $valid_number == $value)) {
        $error['message'] = $this
          ->t('The number %value is not a valid CPF number.', [
          '%value' => $value,
        ]);
      }
    }
  }
  return $is_valid;
}