Problem

When running php vendor/bin/codecept build, multiple PHP deprecated warnings are displayed due to implicit nullable parameters in several methods within the Codeception Laravel module.

Example warning:
PHP Deprecated: Codeception\Module\Laravel\InteractsWithAuthentication::amActingAs(): Implicitly marking parameter $guardName as nullable is deprecated...

Affected files and methods include:

• InteractsWithAuthentication.php

  • amActingAs() (line 21)
  • amLoggedAs() (line 50)
  • assertAuthenticatedAs() (line 72)
  • assertCredentials() (line 100)
  • assertInvalidCredentials() (line 118)
  • dontSeeAuthentication() (line 133)
  • seeAuthentication() (line 159)
  • hasCredentials() (line 167)

• InteractsWithConsole.php

  • callArtisan() (line 24)

• InteractsWithViews.php

  • seeFormErrorMessage() (line 46)

Cause

Implicitly nullable parameters are deprecated as of PHP 8.4 (RFC: https://wiki.php.net/rfc/deprecate-implicitly-nullable-types). The explicit nullable type declaration (?type) must now be used.

For example:

- public function amActingAs($user, $guardName = null)
+ public function amActingAs($user, ?string $guardName = null)

Possible solution

Update the method signatures by explicitly declaring nullable parameters with ?type notation for each affected method.

Environment

• PHP Version: 8.4
• Codeception/module-laravel

Contribution

Community contributions via Pull Requests to resolve this issue are welcome.