How can PHP be optimized for forum performance and scalability?

To optimize PHP for forum performance and scalability, you can implement caching mechanisms, minimize database queries, use asynchronous processing for tasks like sending emails, and utilize a content delivery network (CDN) for serving static assets. 

// Example code snippet for implementing caching in PHP using Memcached

$memcached = new Memcached();
$memcached->addServer('localhost', 11211);

$key = 'forum_posts';
$posts = $memcached->get($key);

if (!$posts) {
    $posts = // Code to fetch forum posts from the database
    $memcached->set($key, $posts, 3600); // Cache for 1 hour
}

// Display forum posts
foreach ($posts as $post) {
    echo $post['title'] . ': ' . $post['content'];
}

Keywords

caching database optimization indexing load balancing query optimization

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