oxsepavalidator.php

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<?php

class oxSepaValidator
{
    public function isValidBIC($sBIC)
    {
        return (bool)getStr()->preg_match("([a-zA-Z]{4}[a-zA-Z]{2}[a-zA-Z0-9]{2}([a-zA-Z0-9]{3})?)", $sBIC);
    }

    public function isValidIBAN($sIBAN)
    {
        $blValid = true;

        $oStr = getStr();
        $sIBAN = strtoupper( trim($sIBAN) );
        $aIBANRegistry = $this->getIBANRegistry();

        // 1. Check that the total IBAN length is correct as per the country. If not, the IBAN is invalid.
        $sLangAbbr = $oStr->substr($sIBAN, 0, 2);
        $iLength = $aIBANRegistry[$sLangAbbr];
        if ( !is_null($iLength) && $oStr->strlen($sIBAN) != $iLength ) {
            $blValid = false;
        }

        // 2. Move the four initial characters to the end of the string.
        $sInitialChars = $oStr->substr($sIBAN, 0, 4);
        $sIBAN = substr_replace($sIBAN, '', 0, 4);
        $sIBAN = $sIBAN . $sInitialChars;

        // 3. Replace each letter in the string with two digits, thereby expanding the string, where A = 10, B = 11, ..., Z = 35.
        $sIBAN= str_replace(
            array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'),
            array(10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35),
            $sIBAN
        );

        // 4. Interpret the string as a decimal integer and compute the remainder of that number on division by 97.
        $sModulus = bcmod($sIBAN, 97);
        if ( (int)$sModulus != 1 ) {
            $blValid = false;
        }

        // 5. Return validation result
        return $blValid;
    }

    public function isValidIBANRegistry($aIBANRegistry = null)
    {
        $blValid = true;

        // If not passed, validate default IBAN registry
        if ( is_null($aIBANRegistry) ) {
            $aIBANRegistry = $this->getIBANRegistry();
        }

        if ( !is_array($aIBANRegistry) || empty($aIBANRegistry) ) {
            $blValid = false;
        }

        foreach ($aIBANRegistry as $sCountryAbbr => $iLength) {
            if ( (int)preg_match("/^[A-Z]{2}$/", $sCountryAbbr) === 0 ) {
                $blValid = false;
                break;
            }
            if ( !is_numeric($iLength) || (int)preg_match("/\./", $iLength) === 1 ) {
                $blValid = false;
                break;
            }

        }

        return $blValid;
    }

    public function setIBANRegistry($aIBANRegistry)
    {
        if ( $this->isValidIBANRegistry($aIBANRegistry) ) {
            $this->_aIBANRegistry = $aIBANRegistry;
            return true;
        } else {
            return false;
        }

    }

    public function getIBANRegistry()
    {
        return $this->_aIBANRegistry;
    }

    protected $_aIBANRegistry = array(
        'AL' => 28,
        'AD' => 24,
        'AT' => 20,
        'AZ' => 28,
        'BH' => 22,
        'BE' => 16,
        'BA' => 20,
        'BR' => 29,
        'BG' => 22,
        'CR' => 21,
        'HR' => 21,
        'CY' => 28,
        'CZ' => 24,
        'DK' => 18, // Same DENMARK
        'FO' => 18, // Same DENMARK
        'GL' => 18, // Same DENMARK
        'DO' => 28,
        'EE' => 20,
        'FI' => 18,
        'FR' => 27,
        'GE' => 22,
        'DE' => 22,
        'GI' => 23,
        'GR' => 27,
        'GT' => 28,
        'HU' => 28,
        'IS' => 26,
        'IE' => 22,
        'IL' => 23,
        'IT' => 27,
        'KZ' => 20,
        'KW' => 30,
        'LV' => 21,
        'LB' => 28,
        'LI' => 21,
        'LT' => 20,
        'LU' => 20,
        'MK' => 19,
        'MT' => 31,
        'MR' => 27,
        'MU' => 30,
        'MD' => 24,
        'MC' => 27,
        'ME' => 22,
        'NL' => 18,
        'NO' => 15,
        'PK' => 24,
        'PS' => 29,
        'PL' => 28,
        'PL' => 28,
        'PT' => 25,
        'RO' => 24,
        'SM' => 27,
        'SA' => 24,
        'RS' => 22,
        'SK' => 24,
        'SI' => 19,
        'ES' => 24,
        'SE' => 24,
        'CH' => 21,
        'TN' => 24,
        'TR' => 26,
        'AE' => 23,
        'GB' => 22,
        'VG' => 24
    );
}