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<?php class CC { private static $bt; public function run(&$a) { self::$bt[] = debug_backtrace(); $a = 222; } } function n(&$a) { (new CC())->run($a); } $a = [ 'a' => 1, 'b' => 2, 'c' => 3 ]; n($a['b']); echo '<pre>'; var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<pre>array(3) { ["a"]=> int(1) ["b"]=> int(222) ["c"]=> int(3) }
Output for 5.6.0 - 5.6.26, 7.0.0 - 7.0.12, 7.1.0, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33
<pre>array(3) { ["a"]=> int(1) ["b"]=> &int(222) ["c"]=> int(3) }
preferences:
149.77 ms | 402 KiB | 180 Q