现有类对象中的PHP匿名函数声明[重复]

Question

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Initialize class property with an anonymous function

I've been programing PHP for quite a while, and PHP 5.3 anonymous functions are one of those thinks that help you out a lot while building some simple scripts. However, I cannot understand why would the following example won't work?

$db         = new PDO([..]);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
$db->die    = function($str){ die(var_dump( $str )); };

$db->die('[..]');

After all, all I do is declare anonymous function on ->die property of PDO instance. This kinda makes me think this is a PHP bug.

Answer 1

According to the answers to this question: php Set a anonymous function in an instance

It is by design (or a design error). There are some workaround suggestions provided there.