title: PHP String present in any position
body: <p>In PHP, Suppose in a string
  $str = "How are you";</p>
  
  <p>"are" can be detected by strpos("are",$str);</p>
  
  <p>How to retrieve that "w r y" is present in $str?
  ("WheRe are You")</p>
  
  <p>I have tried the above. Using wildcard characters like * did not give me desired results..</p>