title: mcrypt 7.1 deprecated / 7.2+ removal
body: <p>I have been following information on SO about generating random strings using <code>mcrypt_create_iv()</code> and have some example code over at <a href="https://3v4l.org/jPCSd" rel="nofollow noreferrer">3v4l.org</a>.</p>
  
  <p>After reading the <a href="https://wiki.php.net/rfc/mcrypt-viking-funeral" rel="nofollow noreferrer">PHPWiki</a> all <code>mycrypt_*</code> functions will <em>show</em> a depreceated warning but it does not specify what will be used in 7.2/8.0 that replaces these functions.</p>
  
  <p>Since it states it will be <strong>removed</strong> in 7.2/8.0, what will be used to replace IV's?</p>
  
  <p>I do not use this function in my software for encryption and decryption. I only use it for safe/retrievel of a unique string.</p>