是否可以在变量中打印php变量？

Question

I have a very simple question. But is really making me crazy.

I have a statement say:

example and example with one php variable like $loggedin_user_name

First of all, I want to store the above sentence in MySQL database and then take it back whenever I want to print the above statement. It seems that their is no issue.
But when I tried to print data after extracting from database it is printing the same statement. But i guess, it has to print the logged in user name instead of $loggedin_user_name in the above statement.

So, is it possible to print the variable within the variable? If yes, please suggest a way.

Answer 1

use sprintf()

$str = "example and example with one php variable like %s";

Then load it from database and fill

$out = sprintf($str, $loggedin_user_name);