In what ways can the PHP code be optimized to improve the performance and reliability of the quiz game, especially when it comes to displaying questions based on user-selected options?

To improve the performance and reliability of the quiz game when displaying questions based on user-selected options, you can optimize the PHP code by using efficient database queries and caching mechanisms. By minimizing the number of database queries and storing frequently accessed data in cache, you can reduce the load on the server and improve the overall responsiveness of the quiz game. 

// Example of optimizing PHP code for displaying questions based on user-selected options
// Assume $selectedOptions is an array containing the user-selected options

// Connect to the database
$connection = new mysqli($host, $username, $password, $database);

// Prepare the query to fetch questions based on selected options
$query = "SELECT * FROM questions WHERE option IN (".implode(",", $selectedOptions).")";

// Check if the query result is already cached
$cacheKey = md5($query);
if ($cachedResult = $cache->get($cacheKey)) {
    $questions = $cachedResult;
} else {
    // Execute the query if not cached
    $result = $connection->query($query);
    $questions = $result->fetch_all(MYSQLI_ASSOC);

    // Store the query result in cache for future use
    $cache->set($cacheKey, $questions, $cacheExpiration);
}

// Display the questions to the user
foreach ($questions as $question) {
    echo $question['question_text']."<br>";
}

Keywords

PHP optimization performance reliability user-selected options

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