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<?php |
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namespace IbanGenerator\Bban; |
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use InvalidArgumentException; |
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class SpainBban implements BbanInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $bankCode; |
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/** |
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* @var string |
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*/ |
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private $branchCode; |
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/** |
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* @var string |
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*/ |
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private $checkDigits; |
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/** |
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* @var string |
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*/ |
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private $accountNumber; |
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/** |
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* SpainBban constructor. |
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* |
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* @param string $bankCode |
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* @param string $branchCode |
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* @param string $checkDigits |
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* @param string $accountNumber |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct( |
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$bankCode, |
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$branchCode, |
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$checkDigits, |
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$accountNumber |
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) { |
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static::validateBankCodeFormat($bankCode); |
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static::validateBranchCodeFormat($branchCode); |
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static::validateCheckDigitsFormat($checkDigits); |
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static::validateAccountNumberFormat($accountNumber); |
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static::validateControlDigit( |
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$bankCode, |
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$branchCode, |
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$checkDigits, |
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$accountNumber |
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); |
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$this->bankCode = $bankCode; |
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$this->branchCode = $branchCode; |
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$this->checkDigits = $checkDigits; |
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$this->accountNumber = $accountNumber; |
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} |
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/** |
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* @param string $bban |
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* |
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* @throws InvalidArgumentException |
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* |
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* @return static |
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*/ |
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public static function fromString($bban) |
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{ |
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if (! preg_match('/^[\d]{20}$/', $bban)) { |
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throw new InvalidArgumentException('Bban should be 20 numbers'); |
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} |
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$bankCode = substr($bban, 0, 4); |
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$branchCode = substr($bban, 4, 4); |
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$checkDigits = substr($bban, 8, 2); |
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$accountNumber = substr($bban, 10, 10); |
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return new static($bankCode, $branchCode, $checkDigits, $accountNumber); |
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} |
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/** |
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* @return string |
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*/ |
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public function bankCode() |
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{ |
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return $this->bankCode; |
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} |
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/** |
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* @return string |
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*/ |
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public function branchCode() |
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{ |
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return $this->branchCode; |
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} |
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/** |
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* @return string |
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*/ |
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public function checkDigits() |
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{ |
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return $this->checkDigits; |
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} |
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/** |
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* @return string |
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*/ |
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public function accountNumber() |
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{ |
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return $this->accountNumber; |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->bankCode . $this->branchCode . $this->checkDigits . $this->accountNumber; |
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} |
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/** |
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* @param $bankCode |
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* |
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* @throws InvalidArgumentException |
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*/ |
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private static function validateBankCodeFormat($bankCode) |
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{ |
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if (! preg_match('/^[\d]{4}$/', $bankCode)) { |
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throw new InvalidArgumentException('Bank code should be 4 numbers'); |
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} |
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} |
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/** |
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* @param $branchCode |
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* |
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* @throws InvalidArgumentException |
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*/ |
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private static function validateBranchCodeFormat($branchCode) |
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{ |
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if (! preg_match('/^[\d]{4}$/', $branchCode)) { |
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throw new InvalidArgumentException('Branch code should be 4 numbers'); |
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} |
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} |
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/** |
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* @param $checkDigits |
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* |
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* @throws InvalidArgumentException |
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*/ |
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private static function validateCheckDigitsFormat($checkDigits) |
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{ |
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if (! preg_match('/^[\d]{2}$/', $checkDigits)) { |
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throw new InvalidArgumentException('Check digits should be 4 numbers'); |
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} |
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} |
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/** |
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* @param $accountNumber |
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* |
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* @throws InvalidArgumentException |
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*/ |
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private static function validateAccountNumberFormat($accountNumber) |
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{ |
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if (! preg_match('/^[\d]{10}$/', $accountNumber)) { |
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throw new InvalidArgumentException('Account number should be 10 numbers'); |
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} |
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} |
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/** |
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* @param $bankCode |
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* @param $branchCode |
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* @param $checkDigits |
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* @param $accountNumber |
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* |
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* @throws InvalidArgumentException |
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*/ |
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private static function validateControlDigit( |
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$bankCode, |
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$branchCode, |
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$checkDigits, |
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$accountNumber |
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) { |
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$dc = ''; |
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$validations = [6, 3, 7, 9, 10, 5, 8, 4, 2, 1]; |
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foreach ([$bankCode . $branchCode, $accountNumber] as $string) { |
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$suma = 0; |
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for ($i = 0, $len = strlen($string); $i < $len; $i++) { |
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$suma += $validations[$i] * substr($string, $len - $i - 1, 1); |
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} |
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$digit = 11 - $suma % 11; |
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if ($digit == 11) { |
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$digit = 0; |
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} elseif ($digit == 10) { |
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$digit = 1; |
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} |
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$dc .= $digit; |
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} |
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if ($checkDigits !== $dc) { |
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throw new InvalidArgumentException('Control digits are not valid'); |
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} |
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} |
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} |
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Let’s assume you have a class which uses late-static binding:
}
The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the
getSomeVariable()on that sub-class, you will receive a runtime error:In the case above, it makes sense to update
SomeClassto useselfinstead: