fem*_*chi 5 php html-parsing domdocument
如何HTML使用DOMDocumentin 从文件中提取信息PHP
我的HTML页面里面有这个部分的来源
这是我需要处理的页面中的第三个表:
<table>
<tbody>
<tr>
<td>A</td>
<td>B</td>
<td>C</td>
<td>D</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
</tbody>
</table>
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如果我的用法要求我用B和D显示行,我应该如何提取该表的第一行并使用DOMDocument打印它?
MrC*_*ode 15
这将做到这一点,它只是抓住了第三个表,遍历行和检查B,并D在第二和第四列.如果找到,它会打印出每个列值然后停止循环.
$dom = new DOMDocument();
$dom->loadHTML(.....);
// get the third table
$thirdTable = $dom->getElementsByTagName('table')->item(2);
// iterate over each row in the table
foreach($thirdTable->getElementsByTagName('tr') as $tr)
{
$tds = $tr->getElementsByTagName('td'); // get the columns in this row
if($tds->length >= 4)
{
// check if B and D are found in column 2 and 4
if(trim($tds->item(1)->nodeValue) == 'B' && trim($tds->item(3)->nodeValue) == 'D')
{
// found B and D in the second and fourth columns
// echo out each column value
echo $tds->item(0)->nodeValue; // A
echo $tds->item(1)->nodeValue; // B
echo $tds->item(2)->nodeValue; // C
echo $tds->item(3)->nodeValue; // D
break; // don't check any further rows
}
}
}
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