Build Anything With PHP

Why PHP? there is a tons of reasons I can tell you why PHP, in fact PHP is my favourite simply because it's easy to understand, PHP is mainly focused on server-side scripting, so you can do anything any other CGI program can do.

The point of PHP is :

• you can implement any kind of two or more step authentication system. In fact is fully capable of generating a secure, random token and storing it on a database.
• sending the token to your mail inbox using PHP-Mailer
• connecting to an SMS provider's API service to send the token as SMS message.
• Databases made easy, PHP includes database support, like: MySQL, PostgreSQL, Oracle, Microsoft SQL Server, SQLite. etc...

You can also use No-SQL databases like MongoDB.

So basically there is more to it, not just that, you can build anything with PHP.

For starter I suggest you read PHP and MySQL Web Development the 5th edition Book by Luke Welling and Laura Thomson as I suggested this book a while back.