From v8.3 to v9¶

Only the way objects are built changed.

Along with it: every class became final, the minimum PHP version became 7.1, strict type hints were added throughout, and HHVM stopped being tested.

Constructors became private¶

Build objects through the static methods.

use OTPHP\TOTP;

// Before
$otp = new TOTP();

// After
$otp = TOTP::create();

create() has itself been deprecated since v11.1, in favour of generate() and createFromSecret(). If you are coming from v8.3 today, go straight to those — see Creating an OTP.

The label left the constructor¶

It was the first argument; it has a method of its own.

use OTPHP\TOTP;

// Before
$otp = new TOTP($label);

// After
$otp = TOTP::create();
$otp->setLabel($label);

The other parameters are unchanged.

setLabel() is in turn deprecated since v11.4; withLabel() replaces it. See The label and the issuer.