How can PHP developers handle the scenario where the status code '404' appears within the content of a page, affecting the accuracy of page existence checks?

When the status code '404' appears within the content of a page, PHP developers can implement a solution by checking the response headers for the actual status code. By parsing the headers and extracting the correct status code, developers can accurately determine the page's existence.

$url = 'http://example.com/page';
$headers = get_headers($url);

foreach ($headers as $header) {
    if (strpos($header, 'HTTP/1.1 404') !== false) {
        echo "Page does not exist";
        break;
    } else {
        echo "Page exists";
    }
}