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run code in 500+ PHP versions simultaneously
<?php class C { public function __construct( /** @var array<?string> */ public readonly array $params ) {} } $c = new C(['x' => 'y']); $a =& $c->params['x'];
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Fatal error: Uncaught Error: Cannot indirectly modify readonly property C::$params in /in/XMZr5:15 Stack trace: #0 {main} thrown in /in/XMZr5 on line 15
Process exited with code 255.
Output for 8.2.31 - 8.2.34, 8.3.0 - 8.3.35
Fatal error: Uncaught Error: Cannot modify readonly property C::$params in /in/XMZr5:15 Stack trace: #0 {main} thrown in /in/XMZr5 on line 15
Process exited with code 255.
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