title: Regular expression for phone number starting with '00' or '+'
body: <p>I've got a regex problem: I'm trying to force a phone number beginning with either "00" or "+" but my attempt doesn't work. </p>
  
  <pre><code>String PHONE_PATTERN = "^[(00)|(+)]{1}[0-9\\s.\\/-]{6,20}$";
  </code></pre>
  
  <p>It still allows for example "0123-45678". What am i doing wrong?</p>