How to organize the output of a variable declared earlier?

Question

bash

Probably a stupid question, but somehow I have never come across this before and I don’t understand how to formulate it.
Let's say we have some variables, let's say environment variables:
VAR_NAME[0-9]=VAL
We want to make a function to display the name of the variable and its value:

print_var_val(){
   echo "$1=$($1)"   #  ?? Чем заменить эту конструкцию   $($1) ??
}

Answer 1

https://www.gnu.org/savannah-checkouts/gnu/bash/ma...

print_var_val() {
   echo "$1=${!1}"
}