1readonly function
2-----
3<?php
4function readonly() {}
5readonly();
6-----
7array(
8    0: Stmt_Function(
9        attrGroups: array(
10        )
11        byRef: false
12        name: Identifier(
13            name: readonly
14        )
15        params: array(
16        )
17        returnType: null
18        stmts: array(
19        )
20    )
21    1: Stmt_Expression(
22        expr: Expr_FuncCall(
23            name: Name(
24                name: readonly
25            )
26            args: array(
27            )
28        )
29    )
30)
31