我有一个php变量，其中包含一个html文档。我试图将li>span和li>strong提取到某种关联数组中。
$html变量中的html是
<ul class="ul-data" xmlns:utils="urn:utils" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<li><span>
Vehicle make
</span><strong>CITROEN</strong></li>
<li><span>
Year of manufacture
</span><strong>1997</strong></li>
<li><span>
Cylinder capacity (cc)
</span><strong>1124cc
</strong></li>
<li><span>
Fuel type
</span><strong>PETROL</strong></li>
<li><span>
Vehicle colour
</span><strong>BLUE</strong></li>
<li><span>
Vehicle type approval
</span><strong>
Not available
</strong></li>
</ul>
到目前为止我的代码是
$dom = new DOMDocument();
//as @Larry.Z comments, you forgot to load the $html
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
//assuming there can be more than one "result set" on each page
$results = array();
$result_divs = $xpath->query('//ul[@class="ul-data"]');
foreach ($result_divs as $result_div) {
$result=array();
foreach ($result_div->childNodes as $result_item) {
$content=trim($result_item->textContent);
if ($content!='') $result[]=$content;
}
$results[]=$result;
}
echo '<pre>';
print_r($results);
echo '</pre>';
它打印出
Array
(
[0] => Array
(
[0] => Vehicle make
CITROEN
[1] => Date of first registration
27 August 1997
[2] => Year of manufacture
1997
[3] => Cylinder capacity (cc)
1124cc
[4] => Fuel type
PETROL
[5] => Vehicle colour
BLUE
[6] => Vehicle type approval
Not available
)
)
我如何让它设置像这样的关联数组
[Vehicle make] => CITREON
问题是，我需要获取li>span作为键，然后将<strong>之间的数据作为值。
由于html只有一个ul，因此不需要外部循环。您可以获取所有li标签，并访问第一个子元素和第二个子元素：
$dom = new DOMDocument();
$dom->loadHTML($html);
$results = array();
foreach ($dom->getElementsByTagName('li') as $li) {
$results[$li->childNodes->item(0)->textContent]=$li->childNodes->item(1)->textContent;
}
print_r($results);