title: A simple comparison in utf8, wrong result?
body: <p>this code prints "no" , but it should print "ok" and utf8 encodes of two are different </p>
  
  <pre><code>$a="کیهان";
  $b="كيهان";
  echo utf8_encode($a)."==".utf8_encode($b)."&lt;br&gt;";
  if(utf8_encode($a)==utf8_encode($b))
      echo "ok";
  else
      echo "no";
  </code></pre>
  
  <p>and the result :</p>
  
  <pre><code>Ú©ÛÙØ§Ù==ÙÙÙØ§Ù
  no
  </code></pre>
  
  <p>what's that © ?</p>
  
  <p>edit : $a is copied and $b is typed</p>