更改先前定义的常量的值
我在 PHP 中定义了一个常量，例如
I have defined a constant in PHP e.g.
define('CONSTANT_NAME', 'constant_value');
我希望稍后能够在代码中更改此常量的值.
I want to be able to change the value of this constant later on in the code.
这可以吗?如果有，怎么做?
Can this be done? If so, how?
推荐答案
来自 http:///php.net/manual/en/function.define.php(重点是我的):
From http://php.net/manual/en/function.define.php (emphasis is mine):
define — 定义一个命名的constant
来自 http://www.php.net/manual/en/language.constants.php:
顾名思义，该值在脚本执行期间无法更改
As the name suggests, that value cannot change during the execution of the script
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