Regex for 12-Hour Time with AM/PM

javascript

const regex = /^(0?[1-9]|1[0-2]):([0-5]\d)\s?(AM|PM|am|pm)$/;
const isValid = regex.test(value);

python

import re
pattern = r'^(0?[1-9]|1[0-2]):([0-5]\d)\s?(AM|PM|am|pm)$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^(0?[1-9]|1[0-2]):([0-5]\d)\s?(AM|PM|am|pm)$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^(0?[1-9]|1[0-2]):([0-5]\d)\s?(AM|PM|am|pm)$/', $value)) {
    echo "valid";
}

java

String pattern = "^(0?[1-9]|1[0-2]):([0-5]\\d)\\s?(AM|PM|am|pm)$";
boolean isValid = value.matches(pattern);