title: replacing all x numbers except last 4 within input value
body: <p>I have an input that looks like this </p>
  
  <pre><code>&lt;input value="{{gameAccount.getAccountNumber() }}" disabled name="accountNumber" type="text"&gt;
  </code></pre>
  
  <p>which displays:</p>
  
  <pre><code>123456789
  </code></pre>
  
  <p>but I want it to display </p>
  
  <pre><code>*****6789
  </code></pre>
  
  <p>I get confused when it is in input value in this particular case with gameAccount.getAccountNumber()</p>
  
  <pre><code>substr($something?, 0, -4) . '****';
  </code></pre>
  
  <p>How do I go about this? thanks in advance</p>
  
  <p>I also saw <code>substr_replace()</code> function...</p>