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<?php trait TTT{ private function baz(){} } class AAA{ use TTT; } class BBB extends AAA{ } $RC = new ReflectionClass(BBB::CLASS); var_dump($RC->getMethods(ReflectionMethod::IS_PRIVATE));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(0) { }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [0]=> object(ReflectionMethod)#2 (2) { ["name"]=> string(3) "baz" ["class"]=> string(3) "AAA" } }

preferences:
155.78 ms | 408 KiB | 5 Q