Regex for Diners Club Credit Card

javascript

const regex = /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^3(?:0[0-5]|[68][0-9])[0-9]{11}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^3(?:0[0-5]|[68][0-9])[0-9]{11}$/', $value)) {
    echo "valid";
}

java

String pattern = "^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
boolean isValid = value.matches(pattern);