Square brackets in name attribute of input tag

Question

I see a lot of time there is square brackets in the name attribute of input tag. What is it for and why it's used?

   `input id="academy_name" name="academy[name]" size="30" type="text" />` 

So why name="academy[name]" and not just name="academy".

Please help!

Answer 1

It is because the developer is using array, and hence he is wrapping the names in [] bar brackets