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<?php class A { public function test(&$arr) { static $i; var_dump(self::$i); if (!isset(self::$i)) { self::$i = &$arr[0]; } } } $arr = [1, 2, 3]; $a = new A(); $a->test($arr); $a->test($arr);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Access to undeclared static property A::$i in /in/q1c35:7 Stack trace: #0 /in/q1c35(17): A->test(Array) #1 {main} thrown in /in/q1c35 on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Access to undeclared static property: A::$i in /in/q1c35:7 Stack trace: #0 /in/q1c35(17): A->test(Array) #1 {main} thrown in /in/q1c35 on line 7
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Access to undeclared static property: A::$i in /in/q1c35 on line 7
Process exited with code 255.

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