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<?php class Foo { private $info = []; function __set($k, $v){ $this->info[$k] = $v; } function &__get($k){ return $this->info[$k] ?: null; } } $bar = new Foo(); $bar->foo = []; var_dump($bar->foo); $bar->foo[] = 'fool'; var_dump($bar->foo);
Output for git.master, git.master_jit, rfc.property-hooks
Notice: Only variable references should be returned by reference in /in/sUZSo on line 10 NULL Notice: Only variable references should be returned by reference in /in/sUZSo on line 10 Notice: Only variable references should be returned by reference in /in/sUZSo on line 10 NULL

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