将数组键和值提取为变量

问题描述：

As you know, Codeigniter is a great PHP framework, I'm trying to make my own framework. Here is a problem. I really like the $data functionality in Codeigniter and I want to make it happen in my framework. Question is, how it works. Here is what it does :

you make a array like this :
```
$data['title']= 'My Name';
```
then you can use this variable like this in view :
```
$title ;
```

How I can make a variable like $data ?

如您所知，Codeigniter是一个很棒的PHP框架，我正在尝试创建自己的框架。这是一个问题。我非常喜欢Codeigniter中的$ data code>功能，我想在我的框架中实现它。问题是，它是如何工作的。以下是它的作用： p>

 你创建一个这样的数组： p> 
 
 
  $ data ['  title'] ='我的名字'; 
  code>  pre>  li> 
  然后你可以在视图中使用这个变量： p> 
 
  
  $ title; 
  code>  pre>  li> 
  ol> 
 
 如何制作像 $ data ？ p> 
  div>

答

What you are looking for is turning array keys into variables. There's one in-built function given to do this.

extract() - Import variables into the current symbol table from an array

$data['x'] = "Value";
extract($data,  EXTR_PREFIX_SAME, null);
echo $x;

Go through docs and explore how you want to use it.

答

Your question is a bit vague, and also don't write your own framework if you are struggling with this question.

But I think what you are asking is how does CI access the variables in $data (without $data['var_name'];) ?

So if you pass:

$data = array("title" => "a page title");

in your view you can just . Is that your question - how to do that?

it is simple.

function view($data=array(),$file="your-view-file.php") {
extract($data); 
include($file);
}

because extract is in the same scope as the include().

Honestly though, just go through the CI files and work this stuff out...

将数组键和值提取为变量

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