Regex for UK Phone Number

javascript

const regex = /^(?:\+44|0)7\d{9}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^(?:\+44|0)7\d{9}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^(?:\+44|0)7\d{9}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^(?:\+44|0)7\d{9}$/', $value)) {
    echo "valid";
}

java

String pattern = "^(?:\\+44|0)7\\d{9}$";
boolean isValid = value.matches(pattern);