php从函数返回访问数组值

Question

silly php question... why cant i do this? 愚蠢的PHP问题...为什么我不能这样做？

echo Auth::getFullUser()[ 'country' ];

instead you have to do this 相反，你必须这样做

$user = Auth::getFullUser();
echo $user[ 'country' ];

Answer 1

The syntax just doesn't allow it unfortunately. 不幸的是，语法不允许它。

AFAIK there was at one time intention to put that syntax in PHP6, but it has been dropped . AFAIK曾经有意将该语法放在PHP6中，但它已被删除。

Answer 2

PHP语法只允许变量表达式（即$user ）结尾的下标符号（即['country'] ）而不是表达式（即Auth::getFullUser() ）

Answer 3

Poor language/interpreter design. 语言/口译设计差。

Same reason you can't do "functionname"() and functions are case insensitive. 同样的原因你不能做“functionname”（）和函数是不区分大小写的。