title: What range of characters can PHP's openssl_encrypt() output using AES-256-cbc?
body: <p>I'm using PHP's openssl_encrypt(), and I was wondering what the set of all possible output characters is when the encryption method is AES-256-cbc? Thanks for any help you can provide!</p>
  
  <ul>
  <li>Rohan</li>
  </ul>