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How can I extract text from specific HTML elements with different classes into separate arrays using PHP?
- Patricia ArquetteOriginal
- 2024-11-21 12:01:10915browse
Extract Text from Specific HTML Elements into Arrays
Problem:
You possess HTML content with elements containing both headings and regular text. Your goal is to extract the text from elements with a designated class ("Heading1-H" for headings, "Normal-H" for text) into two separate arrays: $heading and $content.
Solution:
Using PHP DOM and XPath
PHP DOM (Document Object Model) and XPath (XML Path Language) offer a robust solution for this task. Here's the implementation:
$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;
}
Output:
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"
}
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