How can information such as browser, OS, and search history be accessed and stored in a PHP website?

To access and store information such as browser, OS, and search history in a PHP website, you can use server-side variables like $_SERVER['HTTP_USER_AGENT'] to get browser and OS information, and $_SERVER['HTTP_REFERER'] to get search history. You can then store this information in a database for future use or analysis.

$browser = $_SERVER['HTTP_USER_AGENT'];
$os = getOS($_SERVER['HTTP_USER_AGENT']);
$searchHistory = $_SERVER['HTTP_REFERER'];

// Store this information in a database
// Example: $conn->query("INSERT INTO user_info (browser, os, search_history) VALUES ('$browser', '$os', '$searchHistory')");