title: how to install pecl php extension in wamp
body: <p>I am in need to install PECL extension to enable Memcache for my Drupal 7 site.</p>
  
  <p>I downloaded the <strong><em>5.5 Thread Safe (TS) x64</em></strong> from the below link.
  <a href="https://pecl.php.net/package/zip/1.12.3/windows" rel="nofollow">https://pecl.php.net/package/zip/1.12.3/windows</a></p>
  
  <p>Unzipped it &amp; copied the dll &amp; pasted into the directory </p>
  
  <p><strong><em>C:\wamp\bin\php\php5.5.12\ext</em></strong></p>
  
  <p>File name copied-pasted - <strong><em>php_zip.dll</em></strong> (name seems irrelevant but the only dll available in zip)</p>
  
  <p>Added the following line into <strong>php.ini</strong></p>
  
  <pre><code>extension=php_zip.dll
  </code></pre>
  
  <p>restarted the wamp server. </p>
  
  <p>But still pecl is unavailable.</p>
  
  <p>So how do I install this extension then.</p>