title: strlen() and UTF-8 encoding
body: <p>Assuming UTF-8 encoding, and strlen() in PHP, is it possible that this string has a length of 4?</p>
  
  <p>I'm only interested to know about strlen(), not other functions</p>
  
  <p>This is the string:</p>
  
  <blockquote>
    <p>$1ï¿½2</p>
  </blockquote>
  
  <p>I have tested it on my own computer, and I have verified UTF-8 encoding, and the answer I get is 6.</p>
  
  <p>I don't see anything in the manual for strlen or anything I've read on UTF-8 that would explain why some of the characters above would count for less than one. </p>
  
  <p>PS: This question and answer (4) comes from a mock test for ZCE I bought on Ebay.</p>