title: Convert Lower Case Special Character to UpperCase
body: <p>I have <code>ñ</code> as a special character. It's uppercase equivalent is <code>Ñ</code>. I want to convert the lowercase special character to uppercase. I tried the code below:</p>
  
  <pre><code>strtouppercase('ñ');
  ucfirst('ñ');
  ucwords('ñ');
  </code></pre>
  
  <p>But the code above does not convert anything. What shall I do to convert the special character?</p>