html没有按照我期望的方式打印到网页源代码中 [英] html not printing out the way I expect it to in the webpage source

问题描述

有人能告诉我，保持相同的抽象水平，如何正确地做到这一点？我有这两个基本的课程，这不符合我的要求。最终的回应应该是：

 < div class =test> 
 content 
< / div> 
  

如果我这样做：

  class Wrapper {
 
 protected $ _html =''; 
 
 public function open（）{
 $ this-> _html。='< div class =test>'; 
} 
 
 public function close（）{
 $ this-> _html。='< / div>'; 
} 
 
 public function __toString（）{
 return $ this-> _html; 
} 
} 
 
 class内容{
 
保护$ hmtl。=''; 
 
 public function content（）{
 $ wrapper = new Wrapper（）; 
 $ wrapper-> open（）; 
 $ this-> html。='test'; 
 $ wrapper-> close（）; 
} 
 
 public function __toString（）{
 return $ this-> _html; 
 
 
 $ / code $ / pre> 
 
 
 $ content = new Content（）; 
 echo $ content-> content（）; 
 
 
我得到了，是的，这是源代码：
 content; 
  
 如果我这样做：
  class Wrapper {
 
 protected $ _html =''; 
 
 public function open（）{
 echo $ this-> _html。='< div class =test>'; 
} 
 
 public function close（）{
 echo $ this-> _html。='< / div>'; 
} 
 
 //技术上不需要这个
公共函数__toString（）{
 return $ this-> _html; 
} 
} 
  
我明白了，是的，  
 
 
 < div class =test>< / div> 
content
  
那么我做错了什么？如何保持相同的抽象级别并获得所需的输出？
解决方案
您需要某种方法来添加内容放入包装中，例如 
 
 
  public function addContent（$ content）{
 $ this-> _html。= $内容; 
} 
  
您可以通过 
 
 
  $ wrapper = new Wrapper（）; 
 $ content = new Content（）; 
 $ wrapper-> open（）; 
 $ wrapper-> addContent（（string）$ content）; 
 $ Wrapper-> Close（）; 
  
 
Can some one show me, keeping the same level of abstraction, how to do this properly? I have these two basic classes, that don't do as I want. The end resualt should be:
<div class="test">
    content
</div>
If I do it this way:
class Wrapper{

    protected $_html = '';

    public function open(){
        $this->_html .= '<div class="test">';
    }

    public function close(){
        $this->_html .= '</div>';
    }

    public function __toString(){
        return $this->_html;
    }
}

class Content{

    protected $hmtl .= '';

    public function content(){
      $wrapper = new Wrapper();
      $wrapper->open();
      $this->html .= 'test';
      $wrapper->close();
    }

    public function __toString(){
        return $this->_html;
    }
}
$content  = new Content();
echo $content->content();


I get, and yes this is from the source:
"content";
If I do it this way:
class Wrapper{

    protected $_html = '';

    public function open(){
        echo $this->_html .= '<div class="test">';
    }

    public function close(){
        echo $this->_html .= '</div>';
    }

    // Technically don't need this
    public function __toString(){
        return $this->_html;
    }
}
I get, and yes this is from the source,
<div class="test"></div>
"content"
So what am I doing wrong? and how do I keep the same level of abstraction and get the desired output?
解决方案
You want some kind of method to add content into the wrapper such as
public function addContent($content){
        $this->_html .= $content;
    }
and you can do this by
$wrapper = new Wrapper();
$content = new Content();
$wrapper->open();
$wrapper->addContent((string)$content);
$Wrapper->Close();


                        
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