Readonly anonymous class
-----
<?php

new readonly class {};
-----
!!php7
array(
    0: Stmt_Expression(
        expr: Expr_New(
            class: Stmt_Class(
                attrGroups: array(
                )
                flags: MODIFIER_READONLY (64)
                name: null
                extends: null
                implements: array(
                )
                stmts: array(
                )
            )
            args: array(
            )
        )
    )
)