\s*URL\s*\s*)[^<]*()~i', static function (array $matches) use ($escapedLaunchUrl): string { return $matches[1] . $escapedLaunchUrl . $matches[2]; }, $profile, 1, $replacementCount ); if ($generatedProfile === null || $replacementCount !== 1) { failRequest(500, 'Profile template is invalid.'); } header('Content-Type: application/x-apple-aspen-config'); header('Content-Disposition: attachment; filename="JeetoKing.mobileconfig"'); header('Cache-Control: private, no-store, no-cache, must-revalidate, max-age=0'); header('Pragma: no-cache'); header('Expires: 0'); header('X-Content-Type-Options: nosniff'); header('Content-Length: ' . strlen($generatedProfile)); echo $generatedProfile;