What are some methods to determine the PHP version on a server through analyzing headers?

If you need to determine the PHP version on a server by analyzing headers, you can check the `X-Powered-By` header which often includes the PHP version information. By parsing this header, you can extract the PHP version being used on the server. 

<?php
$url = 'http://example.com';
$headers = get_headers($url, 1);

if (isset($headers['X-Powered-By'])) {
    $phpVersion = $headers['X-Powered-By'];
    echo "PHP Version: " . $phpVersion;
} else {
    echo "PHP version information not found in headers.";
}
?>

Keywords

PHP version server headers get_headers curl phpinfo

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