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<?php class A { public function __construct(public &$a) {} } $foo = 42; $a = new A($foo); var_dump($a); $foo = 101; var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
object(A)#1 (1) { ["a"]=> &int(42) } object(A)#1 (1) { ["a"]=> &int(101) }

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