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<?php $a = array('hello', 'NO'); var_dump('Start A', $a); $b = $a; var_dump('Start B', $b); $b[] = ':O'; var_dump('End B', $b); var_dump('End A', $a);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 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 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(7) "Start A" array(2) { [0]=> string(5) "hello" [1]=> string(2) "NO" } string(7) "Start B" array(2) { [0]=> string(5) "hello" [1]=> string(2) "NO" } string(5) "End B" array(3) { [0]=> string(5) "hello" [1]=> string(2) "NO" [2]=> string(2) ":O" } string(5) "End A" array(2) { [0]=> string(5) "hello" [1]=> string(2) "NO" }

preferences:
286.93 ms | 406 KiB | 451 Q