如何检查Codeigniter是否设置了$ data变量？ [英] How to check if $data variable is set with Codeigniter?

问题描述

当我设置 $ data ['say_something'] ='Hello'; 之类的数据，并使用 $ this-将其发送到视图时> load-> view（'my_page'，$ data）; ，如何检查视图中是否设置了变量$ say_something？

When I set a data like $data['say_something'] = 'Hello'; and send it to the view with $this->load->view('my_page', $data);, how can I check in the view if the variable $say_something is set? Is there a Codeigniter function to this or something?

推荐答案

这里与Codeigniter无关。这是基本的 PHP 。

There is nothing to do with codeigniter here. It's basic PHP.

if(isset($say_something)){
   echo $say_something;
}
else{
   echo "variable is not there";
}

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