That&#x27;s also how PHP handles it for its password_needs_rehash function:<p><a href="http:&#x2F;&#x2F;php.net&#x2F;manual&#x2F;en&#x2F;function.password-needs-rehash.php" rel="nofollow">http:&#x2F;&#x2F;php.net&#x2F;manual&#x2F;en&#x2F;function.password-needs-rehash.php</a> (PHP &gt;= 5.5)