How can PHP developers ensure that the content extracted from external websites is displayed accurately and consistently on their own web pages?

To ensure that content extracted from external websites is displayed accurately and consistently on their own web pages, PHP developers can use PHP's DOMDocument class to parse the HTML content and extract specific elements. By targeting specific elements using XPath queries, developers can retrieve the desired content and display it on their web pages. Additionally, developers can sanitize the extracted content to remove any unwanted tags or attributes that may affect the display. 

// Create a new DOMDocument object
$doc = new DOMDocument();

// Load the external website content into the DOMDocument object
$doc->loadHTMLFile('https://www.externalwebsite.com');

// Use XPath queries to target specific elements for extraction
$xpath = new DOMXPath($doc);
$elements = $xpath->query('//div[@class="content"]');

// Loop through the extracted elements and display them on the web page
foreach ($elements as $element) {
    echo $element->nodeValue;
}

Keywords

web scraping HTML parsing DOM manipulation regular expressions data sanitization

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