1Expressions in list()
2-----
3<?php
4
5// This is legal.
6list(($a), ((($b)))) = $x;
7// This is illegal, but not a syntax error.
8list(1 + 1) = $x;
9-----
10array(
11    0: Stmt_Expression(
12        expr: Expr_Assign(
13            var: Expr_List(
14                items: array(
15                    0: ArrayItem(
16                        key: null
17                        value: Expr_Variable(
18                            name: a
19                        )
20                        byRef: false
21                        unpack: false
22                    )
23                    1: ArrayItem(
24                        key: null
25                        value: Expr_Variable(
26                            name: b
27                        )
28                        byRef: false
29                        unpack: false
30                    )
31                )
32            )
33            expr: Expr_Variable(
34                name: x
35            )
36        )
37        comments: array(
38            0: // This is legal.
39        )
40    )
41    1: Stmt_Expression(
42        expr: Expr_Assign(
43            var: Expr_List(
44                items: array(
45                    0: ArrayItem(
46                        key: null
47                        value: Expr_BinaryOp_Plus(
48                            left: Scalar_Int(
49                                value: 1
50                            )
51                            right: Scalar_Int(
52                                value: 1
53                            )
54                        )
55                        byRef: false
56                        unpack: false
57                    )
58                )
59            )
60            expr: Expr_Variable(
61                name: x
62            )
63        )
64        comments: array(
65            0: // This is illegal, but not a syntax error.
66        )
67    )
68)
69