not able to retrieve direct child elements using Simple HTML DOM

问题

I have an html table like this

<table>
<tbody>
    <tr>
      <td><table>
          <tbody>
            <tr class="prdLi">
              <td rowspan="2" class="prdNo"><span>310.</span></td>
              <td colspan="2" class="prdDe" rowspan="2"><span>Pepsi</span></td>
            </tr>
            <tr class="prdLi">
              <td class="prdAc"><span> 1.5L</span></td>
              <td><span>&nbsp;</span></td>
            </tr>
          </tbody>
        </table></td>
    </tr>
  </tbody>
</table>

the table is saved as $html

I want to select the child elements of the class .prdLi

I tried like this:

foreach($html->find('tr.prdLi') as $foo){
   echo $foo;

}

the output that i get is like this

<span>310.</span>
<span>Pepsi</span
.
.
.

but what i actually want to get is the code with the parent element td.like this:

<td rowspan="2" class="prdNo"><span>310.</span></td>
<td colspan="2" class="prdDe" rowspan="2"><span>Pepsi</span></td>
.
.
.

please help me

回答1:

Since Simple HTML DOM Parser supports CSS like selectors, you can use 'tr.prdLi td' to specify all td elements which are children of tr with class prdLi. The following should provide what you are looking for:

$htmlstr = <<<EOD
<table>
<tbody>
    <tr>
      <td><table>
          <tbody>
            <tr class="prdLi">
              <td rowspan="2" class="prdNo"><span>310.</span></td>
              <td colspan="2" class="prdDe" rowspan="2"><span>Pepsi</span></td>
            </tr>
            <tr class="prdLi">
              <td class="prdAc"><span> 1.5L</span></td>
              <td><span>&nbsp;</span></td>
            </tr>
          </tbody>
        </table></td>
    </tr>
  </tbody>
</table>
EOD;

$html = str_get_html($htmlstr);
foreach ($html->find('tr.prdLi td') as $foo) {
    echo $foo . "\n";
}

Note that find() is called on the main simple_html_dom-element. In your example, the result was already limited by a previous find().

回答2:

What andy says is correct, but the css for direct child is > *, therefore:

foreach($html->find('tr.prdLi > *') as $foo){
   echo $foo . "\n";
}

来源：https://stackoverflow.com/questions/26338700/not-able-to-retrieve-direct-child-elements-using-simple-html-dom

标签

php

simple-html-dom