Regular expression to match standard 10 digit phone number

Easy-peasy Phone Number Regular Expression 📞

Alright, folks! 🎉 Today, we're diving into the exciting world of regular expressions and tackling a common problem: matching standard 10-digit phone numbers. 💪 Whether you're a tech geek or just a curious reader, buckle up and let's conquer this challenge together! 🙌

The Quest for the Perfect Phone Number Format 🌟

Our goal is to create a regular expression that can match the following standard US phone number formats:

• ###-###-####

• (###) ###-####

• ###

• ###.###.####

📱 Each format has its own unique style, but they all consist of 10 digits. Luckily, regular expressions are here to save the day! 🦸‍♀️🦸‍♂️

Here are the regular expressions that I came up with for each format:

1. ^[1-9]\d{2}-\d{3}-\d{4}
2. ^\(\d{3}\)\s\d{3}-\d{4}
3. ^[1-9]\d{2}\s\d{3}\s\d{4}
4. ^[1-9]\d{2}\.\d{3}\.\d{4}

🤔 Do they look intimidating? Fear not! Let's break them down step by step:

1. The first format ^[1-9]\d{2}-\d{3}-\d{4} matches a three-digit area code, followed by a hyphen, and then two sets of three digits separated by hyphens. For example, 123-456-7890.

2. The second format ^\(\d{3}\)\s\d{3}-\d{4} matches a three-digit area code enclosed in parentheses, followed by a space, and then three digits, hyphen, and four more digits. For example, (123) 456-7890.

3. The third format ^[1-9]\d{2}\s\d{3}\s\d{4} matches a three-digit area code, followed by a space, and then three more sets of three digits separated by spaces. For example, 123 456 7890.

4. The fourth format ^[1-9]\d{2}\.\d{3}\.\d{4} matches a three-digit area code, followed by a dot, and then two more sets of three digits separated by dots. For example, 123.456.7890.

🎉 Boom! We've dissected these complex-looking expressions. But wait — our friend asked if there's a way to condense it into a single expression. Can we do it? Absolutely! 😎

Uniting the Phone Number Formats 🤝

Now, let's combine these four expressions into a stylish all-in-one package! 🎁

^([1-9]\d{2})[-\.\s]?(\d{3})[-\.\s]?(\d{4})$

Impressive, right? This mighty expression covers all the previous formats and even handles variations in the separators (dash, dot, or space) with the help of the [-\.\s]? part. 🙌

The Optional Area Code Adventure 🌐

The final challenge awaits! Our friend wanted to make the area code optional. Let's give it a go! 💪

To achieve this, we can slightly modify our all-in-one expression like this:

^(\+1\s)?([1-9]\d{2})[-\.\s]?(\d{3})[-\.\s]?(\d{4})$

In this fiery expression, (\+1\s)? allows for an optional "+1" area code followed by a space. So, now our expression can handle +1 123-456-7890 as well. 💥

Time to Debut Your Superpowers! ⚡️

Congratulations, my bold and fearless readers! 🥳 You've successfully embarked on a journey to conquer the world of regular expressions and match those elusive 10-digit phone numbers in various formats. Now it's time to unleash your newfound powers!

But before I go, share your thoughts! Have you faced any regex challenges lately? Let's discuss in the comments below. And remember, keep spreading the knowledge and joy of regex! 🙏

May your code be clean and your phone numbers always standardized! 📞✨