PHP：“全球”包括 [英] PHP: "Global" Include

问题描述

当前情况：

• 我的MVC框架的当前版本使用类作为控制器。


• 我的旧 MVC框架中有一些复古模块，它使用简单的扁平包含作为控制器。

• I have the current version of my MVC Framework which uses classes as controllers.
• I have some "vintage" modules from my old MVC Framework which uses simple, flat includes as controllers.

大部分简化意味着：

新版本：

<?PHP
class blaController extends baseController {
    private $intVar;

    function dosomethingFunction() {
        $this->intVar = 123;
        $this->view('myView');
    }
}
?>

旧版本：

<?PHP
$globalVar = 123;
// view "controllername" is automatically shown
?>

我现在正在尝试编写一个包装器，以便能够在我的新MVC中使用旧的控制器无需重写所有内容。为此，我有一个包装器控制器：

I'm now trying to write a wrapper to be able to use my old controllers in my new MVC without having to rewrite everything. To do so, I have a "wrapper" controller:

class wrapController extends baseController {
    function dosomethingFunction() {
        require 'old_dosomething.function.php';
        $this->view('old_dosomething_view');
    }
}

（再次：这非常简单 - 非常简单 - 只是为了得到这个想法。不是实际的代码。）

(Once again: This is VERY, VERY simplified - just to get the idea over. Not actual code.)

这种方法的问题是，以前的全局变量$ globalVar现在只存在于方法dosomethingFunction中并且无法通过视图访问。

The problem with that approach is, that the previously global variable $globalVar now only exists inside of the method "dosomethingFunction" and cannot be accessed by the view.

如果我可以强制要求表现为在全局范围内以便$ globalVar将会出现这种情况再次在全球范围内可用。

This wouldn't be the case if I could force the require to behave as "in global scope" so that $globalVar would once again be available in global scope.

所以：有没有办法实现 require_global 或类似的东西？

So: Is there some way to achieve "require_global" or something similar?

（我的问题的一个解决方案是修改我的旧控制器，以一堆全局命令开始，但我更喜欢一个我不需要改变的解决方案大部分旧代码。）

(One solution for my problem would be to modify my old controllers to start with a bunch of "global" commands, but I'd prefer a solution where I don't have to change so much of that old code.)

（注意：请不要告诉我GLOBALS是坏的。它完全忽略了这个问题的重点。接受它是保持一些旧的要求代码在更新，更清洁的环境中工作。）

(Note: Please don't tell me that GLOBALS are bad. It totally misses the point of this question. Just accept that it is a requirement to keep some old code working in a newer, cleaner environment.)

推荐答案

您可以将dosomethingFunction（）中定义的局部变量添加到全局范围：

You can add local variables defined within dosomethingFunction() to global scope:

class wrapController extends baseController {
    function dosomethingFunction() {
        require 'old_dosomething.function.php';
        //begin added code  
        $vararr = get_defined_vars();
        foreach($vararr as $varName => $varValue) 
              $GLOBALS[$varName] = $varValue;            
        //end added code          
        $this->view('old_dosomething_view');
    }
}

注意，为了使其按预期工作，你应该在使用函数中的任何其他东西之前调用require。 get_defined_vars（）只返回当前作用域中的变量，因此不需要array_diff hacks。

Note, that for this to work as expected, you should call require before using any other thing in the function. get_defined_vars() returns only variables from the current scope, so no array_diff hacks are needed.

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