POST with cross origin policy

If we try to submit a form or something using POST method in cross domain, then we face the cross origin error. We can mitigate this error by first setting the access control on the domain address and the access control header.

header('Access-Control-Allow-Origin: http://www.example.com');
//if you need cookies or login etc
header('Access-Control-Allow-Credentials: true');

After we submit the form, on the response header we set the followings:

if ($this->getRequestMethod() == 'OPTIONS')
{
  header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS');
  header('Access-Control-Max-Age: 604800');
  //if you need special headers
  header('Access-Control-Allow-Headers: x-requested-with');
  exit(0);
}

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