title: How to make is_dir($FoLdEr) case insensitive in php?
body: <p>I need <code>is_dir()</code> to don't care about if the folder or the argument is upper or lower case, or a mix of upper and lower.</p>
  
  <p>So if the foldername is "My Folder" and I run <code>is_dir("mY FoLdEr")</code> the result should be <code>true</code>.</p>