title: php_zip.dll is missing from PHP 5.5 for Windows
body: <p>I downloaded PHP 5.5. for Windows and trying to install Composer.</p>
  
  <p>Later I found that Composer need Zip extension. But <code>php_zip.dll</code> file is missing from PHP 5.5 zip I downloaded from php.net website.</p>
  
  <p>Where can I find this missing <code>php_zip.dll</code>?</p>
  
  <p>Thanks in advance.</p>