问题：
您拥有包含标题和元素的 HTML 内容常规文本。您的目标是将具有指定类的元素中的文本（标题为“Heading1-H”，文本为“Normal-H”）提取到两个单独的数组中：$heading 和 $content。
解决方案：
使用 PHP DOM 和XPath
PHP DOM（文档对象模型）和 XPath（XML 路径语言）为此任务提供了强大的解决方案。这是实现：
$test = <<<HTML
<p class="Heading1-P">
<span class="Heading1-H">Chapter 1</span>
</p>
<p class="Normal-P">
<span class="Normal-H">This is chapter 1</span>
</p>
<p class="Heading1-P">
<span class="Heading1-H">Chapter 2</span>
</p>
<p class="Normal-P">
<span class="Normal-H">This is chapter 2</span>
</p>
<p class="Heading1-P">
<span class="Heading1-H">Chapter 3</span>
</p>
<p class="Normal-P">
<span class="Normal-H">This is chapter 3</span>
</p>
HTML;
$dom = new DOMDocument();
$dom->loadHTML($test);
$xpath = new DOMXPath($dom);
$heading = parseToArray($xpath, 'Heading1-H');
$content = parseToArray($xpath, 'Normal-H');
var_dump($heading);
echo "<br/>";
var_dump($content);
echo "<br/>";
function parseToArray(DOMXPath $xpath, string $class): array
{
$xpathquery = "//*[@class='$class']";
$elements = $xpath->query($xpathquery);
$resultarray = [];
foreach ($elements as $element) {
$nodes = $element->childNodes;
foreach ($nodes as $node) {
$resultarray[] = $node->nodeValue;
}
}
return $resultarray;
}输出：
array(3) {
[0] => string(8) "Chapter 1"
[1] => string(8) "Chapter 2"
[2] => string(8) "Chapter 3"
}
<br/>
array(3) {
[0] => string(15) "This is chapter 1"
[1] => string(15) "This is chapter 2"
[2] => string(15) "This is chapter 3"
}
<br/>以上是如何使用 PHP 将具有不同类的特定 HTML 元素中的文本提取到单独的数组中？的详细内容。更多信息请关注PHP中文网其他相关文章！
