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<?php class Foo { public readonly int $bar; public function __construct(int $bar) { $this->bar = &$bar; } } $foo = new Foo(42); $bar = &$foo->bar; var_dump($foo->bar);
Output for 8.1.1
Fatal error: Uncaught Error: Cannot modify readonly property Foo::$bar in /in/cRgNM:11 Stack trace: #0 {main} thrown in /in/cRgNM on line 11
Process exited with code 255.
Output for 8.1.30 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Fatal error: Uncaught Error: Cannot indirectly modify readonly property Foo::$bar in /in/cRgNM:6 Stack trace: #0 /in/cRgNM(10): Foo->__construct(42) #1 {main} thrown in /in/cRgNM on line 6
Process exited with code 255.
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