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<?php class X { readonly public string $property; public function __construct() { $this->property = 1; } } $object = new x(); $reference =& $object->property; //Cannot modify readonly property X::$property class Y { readonly public string $property; public function __construct(&$a) { // first time assignation $this->property = &$a; //Cannot modify readonly property X::$property } } $a = 'A'; $object = new Y($a);
Output for git.master_jit, git.master
Fatal error: Uncaught Error: Cannot indirectly modify readonly property X::$property in /in/jNtaT:12 Stack trace: #0 {main} thrown in /in/jNtaT on line 12
Process exited with code 255.

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