How to validate a domain name using Regex & Php?

Question

I want a solution to validate only domain names not full urls, The following example is what i\'m looking for:

domain.com -> true
domain.net -> true
do         


        

Answer 1

Please try this expression:

^(http[s]?\:\/\/)?((\w+)\.)?(([\w-]+)?)(\.[\w-]+){1,2}$

What it actually does

• optional http/s://
• optional www
• any valid alphanumeric name (including - and _)
• 1 or 2 occurrences of any valid alphanumeric name (including - and _)

Validation Examples

• http://www.test.com
• test.com.mt