What is php used for ? and how reliable is it?

Question

common questions about PHP

Answer 1

I personally think it's PHP, and in terms of reliability I give it a 10. That may be a high vote, but when you regularly research on security tips, and practice what you've learned regardless of what you develop, it's all that you need on the server side. I'm sure Facebook thinks it's definitely reliable, as it's used daily there - just saying because they're the biggest social network platform.

Answer 2

It's used on the server side.
For example:
You register in a website, write your name and password, php gets what you have typed and processes it on the server and saves the new user on the database.

Now, when you try to log in on that website, php looks on the database if that user exists, if yes, it redirects you to the welcome page or somewhere else, if not, it redirects you to another page, ex. sign up page.

Stuff like that, you can also choose what a user can see on a page ex. if you are an admin you have some more privileges, all that and a lot more can be done with php.