How can PHP beginners effectively troubleshoot issues related to extracting content from redirected pages?

When extracting content from redirected pages in PHP, beginners can effectively troubleshoot issues by checking the HTTP status code of the response. If the status code is a 3xx redirect, they can follow the redirect URL and then extract the content from the final destination page. 

$url = 'http://example.com/redirecting-page';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);

$httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($httpStatus >= 300 && $httpStatus < 400) {
    $finalUrl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
    curl_setopt($ch, CURLOPT_URL, $finalUrl);
    $response = curl_exec($ch);
}

// Extract content from $response
curl_close($ch);

Keywords

cURL HTTP headers DOMDocument XPath error handling

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