title: Getting a warning "PHP Startup: Unable to load dynamic library"
body: <p>I have setup memcache to work on windows and downloaded the php_memcache.dll file. But now whenever i start my wamp server it shown me a warning as:</p>
  
  <pre><code>PHP Startup: Unable to load dynamic library
  
  "C:/wamp/bin/php/php5.4.12/ext/php_memcache.dll" - %1 is not a valid Win32 application.
  </code></pre>
  
  <p>What does this warning means.? How can i correct it.</p>
  
  <p>I am working with Windows 7(64bit). </p>