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run code in 300+ PHP versions simultaneously
<?php final readonly class A { public array $arr; public function __construct() { $this->arr = []; } }; $a = new A;$a->arr[] = 1;var_dump($a->arr);
Output for 8.4.1 - 8.4.15, 8.5.0
Fatal error: Uncaught Error: Cannot indirectly modify readonly property A::$arr in /in/bJjFa:4 Stack trace: #0 {main} thrown in /in/bJjFa on line 4
Process exited with code 255.
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.28
Fatal error: Uncaught Error: Cannot modify readonly property A::$arr in /in/bJjFa:4 Stack trace: #0 {main} thrown in /in/bJjFa on line 4
Process exited with code 255.
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