php和页面ID - 怎么样？ [关闭]

Question

I've just begun to learn PHP and there is something that is bugging me. I often see php pages, which load content the following way:

index.php?id=16 

What does this mean? Is there a single index.php file and the content of a different file (in this case 16) is loaded into this page? Is this advantageous?

And: how do I create such id-pages?

I've already googled it and made a search here, but couldn't find any answers...

If you could simply tell me how this function is called it would already help me a lot!

Thanks in advance!

Answer 1

This means you are calling your index.php file, and you pass it a parameter called id with the value 16. You can access this value like this

$_GET['id']

It allows you to have dynamic content in your page for example.