phone number validation using regex code example

Example 1: phone number regex

^[+]*[(]{0,1}[0-9]{1,4}[)]{0,1}[-\s\./0-9]*$

Example 2: phone number regex

^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$

Example 3: valid phone number regex with country code

((00)?(\+)?\d{1,3})[-\s]+(\d{1,3})[-\s]+(\d{4,10})

Example 4: phone number regex

^[+0]{0,2}(91)?[0-9]{10}$