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<?php $new = new class { public mixed $mixed; }; var_dump($new); var_dump(isset($new->mixed)); var_dump($new->mixed); # kaboom
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
object(class@anonymous)#1 (0) { ["mixed"]=> uninitialized(mixed) } bool(false) Fatal error: Uncaught Error: Typed property class@anonymous::$mixed must not be accessed before initialization in /in/35A87:9 Stack trace: #0 {main} thrown in /in/35A87 on line 9
Process exited with code 255.

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