使用数字索引从控制器传递数据，查看 [英] Using numeric indexes to pass data from controller to view

问题描述

我有一个简单的问题。让我来解释结果
我们用它来从控制器传递数据，查看

I have a simple question. Let me explain
We use this to pass data from controller to view

function index(){

    $data['title'] = 'This is title';
    $data['message'] = 'This is message';
    $this->load->view('test',$data);
}

下面我们使用关联数组来传递数据结果
而现在这又功能及使用方法，而不是关联数组索引数组

Here we are using Associative Array to pass data
And now this function again and use indexed array instead of Associative Array

function index(){

    $data[] = 'This is title';
    $data[] = 'This is message';
    $this->load->view('test',$data);
}   

和现在查看这不起作用。

And now in View this does not work.

echo $data[0];
echo '<br>';
echo $data[1];

我只想知道为什么这是行不通的。而且用户指南中，我从来没有读到关联数组是必要的。

i only want to know if why this does not work. And in the user guide i never read that associative array is necessary.

推荐答案

解析时，视图数据转换成变量。什么的一个类似的结果PHP提取物（）函数提供。例如：

The view data are converted into variables when parsed. A similar result of what extract() function of PHP gives. For example:

$data['title'] = 'This is the title';

将直接访问为 $标题 不可以 $数据['标题'] 。事实上，如果你看看源代码，你会发现它的用途提取物（）和类似的转换发生在你的情况，但由于变量 $ 1,0 和 $ 1 是无效的，使他们无法使用。

will be accessible directly as $title not $data['title']. In fact, if you look at the sources, you will find it does uses extract() and similar conversion happens on your case to, but since variable $0 and $1 are invalid so they are not available.

坚持字符串索引。如果这是不是一种选择，那么你可能要preFIX一些文本之前，如：

Stick to string indexing. If that is not an option, then you might want to prefix something before the texts like:

$data['d0'] = 'This is the title';

在这里阅读手册 的引用它。然而，你可以传递一个数组，而不是一个字符串，给你想要什么确切的结果。

Read the manual here its quoted. However, you can pass an array instead of a string and giving the exact result of what you want.

$data['data'] = array('This is the title', 'This is the description');

现在，这一点，你就可以这样使用访问 $ DATA [0] 和 $数据[1] 。

Now, this you will be access using $data[0] and $data[1].

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