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<?php $arr=[ 'a' => [ 'b' => 3, ] ]; $arrCopy = $arr; $arrCopy['a']['b'] = 12; var_dump($arr); var_dump($arrCopy);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
array(1) { ["a"]=> array(1) { ["b"]=> int(3) } } array(1) { ["a"]=> array(1) { ["b"]=> int(12) } }
preferences:
78.42 ms | 407 KiB | 5 Q