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<?php class Foo { public readonly int $bar; public function __construct(int &$bar) { // Error right here, can't assign reference $this->bar = &$bar; } } $i = 42; $foo = new Foo($i); $i++; var_dump($foo->bar);
Output for 8.1.1
int(43)
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/M1n37:7 Stack trace: #0 /in/M1n37(12): Foo->__construct(42) #1 {main} thrown in /in/M1n37 on line 7
Process exited with code 255.
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