title: regex to accept phone number with or without spaces and also with or without +
body: <p>I have to write reqex to accept phone number with or without spaces and also with or without +  </p>
  
  <p>Here are the examples:</p>
  
  <pre><code> + 01 917 1231234 
   +019171231234
   01 917 123 1234
   019171231234
  </code></pre>
  
  <p>Thanks,
  Mk</p>