What are the best practices for handling duplicate content accessibility in PHP routing?

When handling duplicate content accessibility in PHP routing, one of the best practices is to implement canonical URLs. This involves specifying a preferred version of a URL to search engines, which helps prevent duplicate content issues. Another approach is to use 301 redirects to direct users and search engines to the correct version of the URL. 

// Example implementation of canonical URLs in PHP routing
if ($_SERVER['REQUEST_URI'] == '/duplicate-page') {
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: https://example.com/correct-page');
    exit();
}

Keywords

duplicate content accessibility PHP routing canonical URL 301 redirect

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