1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
--TEST--
Coalesce assign (??=): ArrayAccess handling
--FILE--
<?php
function id($arg) {
echo "id($arg)\n";
return $arg;
}
class AA implements ArrayAccess {
public $data;
public function __construct($data = []) {
$this->data = $data;
}
public function &offsetGet($k): mixed {
echo "offsetGet($k)\n";
return $this->data[$k];
}
public function offsetExists($k): bool {
echo "offsetExists($k)\n";
return array_key_exists($k, $this->data);
}
public function offsetSet($k,$v): void {
echo "offsetSet($k,$v)\n";
$this->data[$k] = $v;
}
public function offsetUnset($k): void { }
}
$ary = new AA(["foo" => new AA, "null" => null]);
echo "[foo]\n";
$ary["foo"] ??= "bar";
echo "[bar]\n";
$ary["bar"] ??= "foo";
echo "[null]\n";
$ary["null"] ??= "baz";
echo "[foo][bar]\n";
$ary["foo"]["bar"] ??= "abc";
echo "[foo][bar]\n";
$ary["foo"]["bar"] ??= "def";
?>
--EXPECT--
[foo]
offsetExists(foo)
offsetGet(foo)
[bar]
offsetExists(bar)
offsetSet(bar,foo)
[null]
offsetExists(null)
offsetGet(null)
offsetSet(null,baz)
[foo][bar]
offsetExists(foo)
offsetGet(foo)
offsetExists(bar)
offsetGet(foo)
offsetSet(bar,abc)
[foo][bar]
offsetExists(foo)
offsetGet(foo)
offsetExists(bar)
offsetGet(bar)
|
