/**
* Ensures that the validator follows expected behavior
*
* @return void
*/
public function testBasic()
{
$valuesExpected = array('4929000000006' => true, '5404000000000001' => true, '374200000000004' => true, '4444555566667777' => false, 'ABCDEF' => false);
foreach ($valuesExpected as $input => $result) {
$this->assertEquals($result, $this->_validator->isValid($input));
}
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if $value follows the Luhn algorithm (mod-10 checksum)
*
* @param string $value
* @return boolean
*/
public function isValid($value)
{
$this->_setValue($value);
if (null === self::$_filter) {
/**
* @see Zend_Filter_Digits
*/
// require_once 'Zend/Filter/Digits.php';
self::$_filter = new Zend_Filter_Digits();
}
$valueFiltered = self::$_filter->filter($value);
$length = strlen($valueFiltered);
if ($length < 13 || $length > 19) {
$this->_error(self::LENGTH);
return false;
}
$sum = 0;
$weight = 2;
for ($i = $length - 2; $i >= 0; $i--) {
$digit = $weight * $valueFiltered[$i];
$sum += floor($digit / 10) + $digit % 10;
$weight = $weight % 2 + 1;
}
if ((10 - $sum % 10) % 10 != $valueFiltered[$length - 1]) {
$this->_error(self::CHECKSUM, $valueFiltered);
return false;
}
return true;
}
/**
* Ensures that getMessages() returns expected default value
*
* @return void
*/
public function testGetMessages()
{
$this->assertEquals(array(), $this->_validator->getMessages());
}
/**
* Ensures that getMessages() returns expected default value
*
* @return void
*/
public function testGetMessages()
{
$this->assertEquals(array(), $this->_validator->getMessages());
restore_error_handler();
}
/**
* Returns TRUE if it is a valid credit card number format.
*
* @deprecated since 0.8.0
* @param mixed $value
* @return boolean
*/
public static function isCcnum($value)
{
require_once 'Zend/Validate/Ccnum.php';
$validator = new Zend_Validate_Ccnum();
return $validator->isValid($value);
}