問題：
您擁有包含標題和元素的HTML內容常規文本。您的目標是將具有指定類別的元素中的文字（標題為“Heading1-H”，文字為“Normal-H”）提取到兩個單獨的陣列中：$heading 和 $content。
解決方案：
使用PHP DOM 和XPath
PHP DOM（文檔物件模型）和XPath（XPath語言）為此任務提供了強大的解決方案。這是實作：
$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;
}輸出：
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 將具有不同類別的特定 HTML 元素中的文字提取到單獨的陣列中？的詳細內容。更多資訊請關注PHP中文網其他相關文章！
