title: Create phone number regex
body: <p>I am using "^[(\+[0-9]{1,3}\.[0-9]{4,14}(?:x.+)?]$"  regex to validate phone number. I want it to work for international numbers as well.
  It is working for the patterns:
  +4454475294x364</p>
  
  <p>I want to add space and '-' also. 
  example: +44 544-75294 x364.</p>
  
  <p>What changes I need more in my regex.</p>
  
  <p>Thanks.</p>