title: How to check if memcache or memcached is installed for PHP?
body: <p>How do I test if <a href="http://pecl.php.net/package/memcache" rel="noreferrer">memcache</a> or <a href="http://pecl.php.net/package/memcached" rel="noreferrer">memcached</a> (for PHP) is installed on my Apache webserver?</p>
  
  <blockquote>
    <p><strong>Memcache</strong> is a caching daemon designed especially for
    dynamic web applications to decrease database load by
    storing objects in memory.</p>
  </blockquote>