title: PHP replace characters in an array
body: <p>I have data like this in my array first_name, last_name,....</p>
  
  <p>I am looking for an array to replace the _ with a space..is this possible?</p>
  
  <p>I took alook at <a href="http://php.net/manual/en/function.array-replace.php" rel="noreferrer">http://php.net/manual/en/function.array-replace.php</a> but I am not sure if this is what I want.</p>