entry. * This function now RETURNS the string instead of echoing it. * * @param string $url The full URL of the page. * @param string $priority The priority of the page. * @param string $changefreq How often the page changes. * @return string The formatted XML block. */ function generateUrlEntry($url, $priority, $changefreq) { $lastMod = date('Y-m-d'); $entry = ' ' . PHP_EOL; $entry .= ' ' . htmlspecialchars($url) . '' . PHP_EOL; $entry .= ' ' . $lastMod . '' . PHP_EOL; $entry .= ' ' . $changefreq . '' . PHP_EOL; $entry .= ' ' . $priority . '' . PHP_EOL; $entry .= ' ' . PHP_EOL; return $entry; } // 1. Add Main Static Pages $urlEntries[] = generateUrlEntry(BASE_URL . '/', '1.0', 'monthly'); $urlEntries[] = generateUrlEntry(BASE_URL . '/date-time/', '0.9', 'monthly'); $urlEntries[] = generateUrlEntry(BASE_URL . '/time-difference/', '0.9', 'monthly'); $urlEntries[] = generateUrlEntry(BASE_URL . '/age-calculator/', '0.9', 'monthly'); // 2. Add Dynamic Pages for the Date Adder/Subtractor Tool $units_to_map = [ 'days' => 365, 'weeks' => 52, 'months' => 12, 'years' => 20, 'hours' => 100, 'minutes' => 100, 'seconds' => 100 ]; $directions = ['from', 'ago']; foreach ($units_to_map as $unit => $range) { for ($i = 1; $i <= $range; $i++) { foreach ($directions as $direction) { $url = BASE_URL . "/date-time/{$i}-{$unit}-{$direction}/"; $urlEntries[] = generateUrlEntry($url, '0.7', 'yearly'); } } } // --- OUTPUT: RENDER THE SITEMAP --- // All logic is done. Now, we print everything in one clean block. // Set the correct XML header (this MUST be called before any output) header('Content-Type: application/xml; charset=utf-8'); // Print the XML declaration and opening tag echo '' . PHP_EOL; echo '' . PHP_EOL; // Print all the collected URL entries echo implode('', $urlEntries); // Print the closing tag echo ''; // A file that is pure PHP should not have a closing tag ?>