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<?php class Foo { protected $protected1 = 'protected1'; public function test1() { var_dump($this->protected1); var_dump($this->protected2); } } class Bar extends Foo { protected $protected2 = 'protected2'; public function test2() { var_dump($this->protected1); var_dump($this->protected2); } } (new Bar)->test1(); (new Bar)->test2();

preferences:
26.2 ms | 404 KiB | 5 Q