title: I want to add one hash to all the hashes in a string (PHP)
body: <p>So in my string, I have certain sections with hashes. For example, consider the string "#Hello, this is a sample string. This is another example of ###hashes".</p>
  
  <p>I want to replace that with:
  "##Hello, this is a sample string, This is another example of ####hashes".
  (note that the number of hashes in each instance increased by one)</p>
  
  <p>However, I'm not too sure how. I'd imagine it involved regular expressions, and I've searched a bit, but I'm not too sure what to do.</p>
  
  <p>Can anyone help/lead me on the right path?</p>
  
  <p>Cheers</p>