试图使用PHP解析网页

问题描述：

I am trying to parse a webpage and print out a table which is on the webpage. I am using php_simple_html dom parser. However, when I try to parse the table off the webpage, all the javascript commands to output the table get turned into comments within the php:

<html>
<script type="text/javascript" src="jquery.js"></script>
<?php
    include 'crawling/simple_html_dom.php';
    $html = file_get_html('http://uiucfreefood.com/');


    $ret = $html->find('body', 0)->find('div', 10)->find('table',0); //gets to the table tag
    echo $ret; // nothing is echoed out because the original webpage uses jscript commands to write the table to the page but these commands get turned to comments for some reason.
?>
</html>

When I inspect the element of the page where I am echoing the parsed information I am able to see that the table tag with all the info is in there but the jscript commands have been turned into comments. Is there a way for me to just grab the info and echo it out myself? I tried adding another ->find('tbody'); at the end of the parse command but it doesn't do anything. Any advice is appreciated. Thanks.

EDIT: You can try this code out yourself if you download the simple_html_dom.php and include it in your php file. Source: http://sourceforge.net/projects/simplehtmldom/files/

EDIT: Just noticed something really important. The javascript commands are commented out in the original webpage also. Instead, the original webpage is using a javascript function to print out the table which I do not have defined. Writing that function myself should fix the issue.

EDIT: yup, that worked.

我正在尝试解析网页并打印出网页上的表格。我正在使用php_simple_html dom解析器。但是，当我尝试从网页上解析表格时，输出表格的所有javascript命令都会变成php中的注释： p>

 ＆lt; html＆gt; 
＆lt;  script type =“text / javascript”src =“jquery.js”＆gt;＆lt; / script＆gt; 
＆lt;？php 
 include'crawling / simple_html_dom.php'; 
 $ html = file_get_html（'http：//  uiucfreefood.com/');
nnnn ret = $ html-＆gt; find（'body'，0） - ＆gt; find（'div'，10） - ＆gt; find（'table'，0  ）;  //获取表格标签
 echo $ ret;  //没有任何内容被回显，因为原始网页使用jscript命令将表格写入页面，但这些命令由于某种原因转向评论。
？＆gt; 
＆lt; / html＆gt; 
  code>   pre> 
 
 当我检查我正在回显解析信息的页面元素时，我能够看到包含所有信息的表标记在那里，但是jscript命令已经变成了注释。 有没有办法让我抓住信息并自己回应？ 我尝试添加另一个 - ＆gt; find（'tbody'）; 在parse命令的末尾但它没有做任何事情。 任何建议表示赞赏。 谢谢。 p> 
 
 
编辑：如果您下载simple_html_dom.php并将其包含在您的php文件中，您可以自己尝试使用此代码。 资料来源： http://sourceforge.net/projects/simplehtmldom/files/   p>  
 
 
编辑：刚刚注意到一些非常重要的事情。  javascript命令也在原始网页中注释掉了。 相反，原始网页使用javascript函数打印出我没有定义的表。 自己写这个功能应该解决这个问题。   p> 
 
 
编辑：是的，有效。   p> 
  div>

答

Try using file_get_content instead of get HTML and see if that works. Honestly, depending on your needs, you should code your own parser. It is not that hard to write a parser for the table scan and display.

You will just need the following;

$array = split("<table>", $content);
$boolPlaceHolder = false;

and you can then set the placeholder to true when you encounter this way you can scan through the chars of the content and grab the table.

Hope this helps.

试图使用PHP解析网页

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