title: How is strpos() in PHP counting?
body: <p>I see some strange results with strpos() function...</p>
  
  <pre><code>echo strpos("naše republika", "a"); // 1
  echo strpos("naše republika", "š"); // 2
  echo strpos("naše republika", "e"); // 4 ???
  </code></pre>
  
  <p>Can someone explain it to me? Thanks. (php 5.6.30)</p>