1Non-simple variables are forbidden in PHP 7 2----- 3<?php 4global $$foo->bar; 5----- 6Syntax error, unexpected T_OBJECT_OPERATOR, expecting ';' from 2:13 to 2:14 7array( 8 0: Stmt_Global( 9 vars: array( 10 0: Expr_Variable( 11 name: Expr_Variable( 12 name: foo 13 ) 14 ) 15 ) 16 ) 17 1: Stmt_Expression( 18 expr: Expr_ConstFetch( 19 name: Name( 20 name: bar 21 ) 22 ) 23 ) 24) 25