1--TEST--
2Unset readonly property
3--FILE--
4<?php
5
6class Test {
7    public readonly int $prop;
8
9    public function __construct(int $prop) {
10        $this->prop = $prop;
11    }
12}
13
14$test = new Test(1);
15try {
16    unset($test->prop);
17} catch (Error $e) {
18    echo $e->getMessage(), "\n";
19}
20
21class Test2 {
22    public readonly int $prop;
23
24    public function __construct() {
25        unset($this->prop); // Unset uninitialized.
26        unset($this->prop); // Unset unset.
27    }
28
29    public function __get($name) {
30        // Lazy init.
31        echo __METHOD__, "\n";
32        $this->prop = 1;
33        return $this->prop;
34    }
35}
36
37$test = new Test2;
38var_dump($test->prop); // Call __get.
39var_dump($test->prop); // Don't call __get.
40try {
41    unset($test->prop); // Unset initialized, illegal.
42} catch (Error $e) {
43    echo $e->getMessage(), "\n";
44}
45
46class Test3 {
47    public readonly int $prop;
48}
49
50$test = new Test3;
51try {
52    unset($test->prop);
53} catch (Error $e) {
54    echo $e->getMessage(), "\n";
55}
56
57?>
58--EXPECT--
59Cannot unset readonly property Test::$prop
60Test2::__get
61int(1)
62int(1)
63Cannot unset readonly property Test2::$prop
64Cannot unset protected(set) readonly property Test3::$prop from global scope
65