title: Can't understand this regex format (Phone number)
body: <p>I have to format a phone number according to this regex:</p>
  
  <pre><code>/^\\+([0-9]){1,3}\\.([0-9]\\ ?){6,14}$/
  </code></pre>
  
  <p>For the life of me, I can't figure out the second half of this. My best efforts have me at</p>
  
  <ol>
  <li>It has to start with a backslash</li>
  <li>Then 1-3 digits</li>
  <li>Then another backslash followed by any character</li>
  <li>6-14 iterations of <code>([0-9]\\ ?)</code></li>
  <li>End of string</li>
  </ol>
  
  <p>If I'm right so far, I can't figure out the format of #4. Or am I totally wrong?</p>
  
  <p>Let's say I have this phone number: +0018005551212 or 18005551212</p>
  
  <p>How would I form this number? Answer would be great but an explanation would be even better. Thanks!!!</p>