What are the best practices for analyzing and utilizing response headers in PHP when dealing with HTTP requests?

When dealing with HTTP requests in PHP, it is important to analyze and utilize response headers properly to extract relevant information such as status codes, content type, and cookies. One common practice is to use the built-in functions like get_headers() or cURL to retrieve the headers and parse them accordingly. By understanding the response headers, you can make informed decisions and handle the server's responses more effectively. 

// Example code snippet to analyze and utilize response headers in PHP

$url = 'https://www.example.com';
$headers = get_headers($url);

// Extracting and printing specific response headers
foreach ($headers as $header) {
    if (strpos($header, 'Content-Type:') !== false) {
        echo 'Content-Type: ' . str_replace('Content-Type: ', '', $header) . PHP_EOL;
    }
    if (strpos($header, 'Set-Cookie:') !== false) {
        echo 'Cookie: ' . str_replace('Set-Cookie: ', '', $header) . PHP_EOL;
    }
}

// Handling HTTP status code
$status_code = explode(' ', $headers[0])[1];
echo 'Status Code: ' . $status_code . PHP_EOL;

Keywords

HTTP headers PHP response analysis utilization

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