使用PHP简单HTML DOM解析器查找div与类 [英] Find div with class using PHP Simple HTML DOM Parser

问题描述

参考本教程：

http://net.tutsplus.com/tutorials/php/html-parsing-and-screen-scraping-with-the-simple-html-dom-library/

我想现在只需在源代码中找到一个带有ClearBoth框的div的内容

我用curl检索代码并创建一个简单的html dom对象：

  $ cl = curl_exec（$ curl）; 
 $ html = new simple_html_dom（）; 
 $ html-> load（$ cl）; 
  

然后我想将div的内容添加到一个名为divs的数组中：

  $ divs = $ html-> find（'div [.ClearBoth Box]'）; 
  

但是现在，当print_r的$ divs，它给了更多，尽管事实上源代码没有更多的div。

像这样：

  
（
 [0] => simple_html_dom_node对象
（
 [nodetype] => 1 
 [tag] => br 
 [attr ] => Array 
（
 [class] => ClearBoth 
）
 
 [children] => Array 
（
 ）
 
 [nodes] => Array 
（
）
 
 [parent] => simple_html_dom_node对象
（
 [nodetype] => 1 
 [tag] => div 
 [attr] => Array 
（
 [class] => SocialMedia 
）
 
 [children] => Array 
（
 [0] => simple_html_dom_node对象
（
 [nodetype] => 1 
 [tag] => iframe 
 [ attr] => Array 
（
 [id] => ShowFacebookButtons 
 [class] => SocialWeb FloatLeft 
 [src] => http：// www。 facebook.com/plugins/xxx 
 [style] => border：none; overflow：hidden; width：250px; height：70px; 
）
 
 [children] = & Array 
（
）
 
 [nodes] =>数组
（
）
  

我不明白为什么$ divs没有

这是网站源代码的一个例子：

 < div class =ClearBoth Box> 
< div> 
< i class =Icon SmallIcon ProductRatingEnabledIconSmalltitle =gute peppigeQualität：Sehr empfehlenswert>< / i> 
< i class =Icon SmallIcon ProductRatingEnabledIconSmalltitle =gute peppigeQualität：Sehr empfehlenswert>< / i> 
< i class =Icon SmallIcon ProductRatingEnabledIconSmalltitle =gute peppigeQualität：Sehr empfehlenswert>< / i> 
< i class =Icon SmallIcon ProductRatingEnabledIconSmalltitle =gute peppigeQualität：Sehr empfehlenswert>< / i> 
< i class =Icon SmallIcon ProductRatingEnabledIconSmalltitle =gute peppigeQualität：Sehr empfehlenswert>< / i> 
 
< strong class =AlignMiddle LeftSmallPadding> gute peppigeQualität< / strong> < span class =AlignMiddle>（17.03.2013）< / span> 
< / div> 
< div class =BottomMargin> 
 gute Verarbeitung，schönesDesign，
< / div> 
< / div> 
  

我做错了什么？

解决方案

使用类获取div的正确代码是：

  $ ret = $ html - >发现（ 'div.foo'）; 
 // OR 
 $ ret = $ html-> find（'div [class = foo]'）; 
  

基本上您可以使用CSS选择器获取元素。

来源： http://simplehtmldom.sourceforge.net/manual.htm

如何查找HTML元素？部分，标签高级

I am just starting with the mentioned Parser and somehow running on problems directly with the beginning.

Referring to this tutorial:

http://net.tutsplus.com/tutorials/php/html-parsing-and-screen-scraping-with-the-simple-html-dom-library/

I want now simply find in a sourcecode tne content of a div with a class ClearBoth Box

I retrieve the code with curl and create a simple html dom object:

$cl = curl_exec($curl);  
$html = new simple_html_dom();
$html->load($cl);

Then I wanted to add the content of the div into an array called divs:

$divs = $html->find('div[.ClearBoth Box]');

But now, when I print_r the $divs, it gives much more, despite the fact that the sourcecode has not more inside the div.

Like this:

Array
(
    [0] => simple_html_dom_node Object
        (
            [nodetype] => 1
            [tag] => br
            [attr] => Array
                (
                    [class] => ClearBoth
                )

            [children] => Array
                (
                )

            [nodes] => Array
                (
                )

            [parent] => simple_html_dom_node Object
                (
                    [nodetype] => 1
                    [tag] => div
                    [attr] => Array
                        (
                            [class] => SocialMedia
                        )

                    [children] => Array
                        (
                            [0] => simple_html_dom_node Object
                                (
                                    [nodetype] => 1
                                    [tag] => iframe
                                    [attr] => Array
                                        (
                                            [id] => ShowFacebookButtons
                                            [class] => SocialWeb FloatLeft
                                            [src] => http://www.facebook.com/plugins/xxx
                                            [style] => border:none; overflow:hidden; width: 250px; height: 70px;
                                        )

                                    [children] => Array
                                        (
                                        )

                                    [nodes] => Array
                                        (
                                        )

I do not understand why the $divs has not simply the code from the div?

Here is an example of the source code at the site:

<div class="ClearBoth Box">
          <div>
<i class="Icon SmallIcon ProductRatingEnabledIconSmall" title="gute peppige Qualität: Sehr empfehlenswert"></i>
<i class="Icon SmallIcon ProductRatingEnabledIconSmall" title="gute peppige Qualität: Sehr empfehlenswert"></i>
<i class="Icon SmallIcon ProductRatingEnabledIconSmall" title="gute peppige Qualität: Sehr empfehlenswert"></i>
<i class="Icon SmallIcon ProductRatingEnabledIconSmall" title="gute peppige Qualität: Sehr empfehlenswert"></i>
<i class="Icon SmallIcon ProductRatingEnabledIconSmall" title="gute peppige Qualität: Sehr empfehlenswert"></i>

              <strong class="AlignMiddle LeftSmallPadding">gute peppige Qualität</strong> <span class="AlignMiddle">(17.03.2013)</span>
          </div>
          <div class="BottomMargin">
            gute Verarbeitung, schönes Design,
          </div>
        </div>

What am I doing wrong?

解决方案

The right code to get a div with class is:

$ret = $html->find('div.foo');
//OR
$ret = $html->find('div[class=foo]');

Basically you can get elements as you were using a CSS selector.

source: http://simplehtmldom.sourceforge.net/manual.htm
How to find HTML elements? section, tab Advanced

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