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<?php $a = new stdClass; $a->a = new stdClass; $a->a->a = new stdClass; $a->a->a->a = 'a'; // $a = [ 'a' => [ 'a' => [ 'a' => 'a' ] ] ]; $b = $a->a->a; var_dump($b); var_dump($b = 'c'); var_dump($a);
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
object(stdClass)#3 (1) { ["a"]=> string(1) "a" } string(1) "c" object(stdClass)#1 (1) { ["a"]=> object(stdClass)#2 (1) { ["a"]=> object(stdClass)#3 (1) { ["a"]=> string(1) "a" } } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(stdClass)(1) { ["a"]=> string(1) "a" } string(1) "c" object(stdClass)(1) { ["a"]=> object(stdClass)(1) { ["a"]=> object(stdClass)(1) { ["a"]=> string(1) "a" } } }

preferences:
267.94 ms | 402 KiB | 358 Q