@author Bernhard Schussek <bschussek@gmail.com>
@api
Expanded class hierarchy of EmailValidator
class EmailValidator extends ConstraintValidator {
/**
* {@inheritDoc}
*/
public function validate($value, Constraint $constraint) {
if (null === $value || '' === $value) {
return;
}
if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
throw new UnexpectedTypeException($value, 'string');
}
$value = (string) $value;
$valid = filter_var($value, FILTER_VALIDATE_EMAIL);
if ($valid) {
$host = substr($value, strpos($value, '@') + 1);
if (version_compare(PHP_VERSION, '5.3.3', '<') && strpos($host, '.') === false) {
// Likely not a FQDN, bug in PHP FILTER_VALIDATE_EMAIL prior to PHP 5.3.3
$valid = false;
}
// Check for host DNS resource records
if ($valid && $constraint->checkMX) {
$valid = $this
->checkMX($host);
}
elseif ($valid && $constraint->checkHost) {
$valid = $this
->checkHost($host);
}
}
if (!$valid) {
$this->context
->addViolation($constraint->message, array(
'{{ value }}' => $value,
));
}
}
/**
* Check DNS Records for MX type.
*
* @param string $host Host
*
* @return Boolean
*/
private function checkMX($host) {
return checkdnsrr($host, 'MX');
}
/**
* Check if one of MX, A or AAAA DNS RR exists.
*
* @param string $host Host
*
* @return Boolean
*/
private function checkHost($host) {
return $this
->checkMX($host) || (checkdnsrr($host, "A") || checkdnsrr($host, "AAAA"));
}
}
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
ConstraintValidator:: |
protected | property | ||
ConstraintValidator:: |
public | function |
Initializes the constraint validator. Overrides ConstraintValidatorInterface:: |
1 |
EmailValidator:: |
private | function | Check if one of MX, A or AAAA DNS RR exists. | |
EmailValidator:: |
private | function | Check DNS Records for MX type. | |
EmailValidator:: |
public | function |
Checks if the passed value is valid. Overrides ConstraintValidatorInterface:: |