A syntax such as $$variable
is called Variable Variable.
For example, if you consider this portion of code :
$real_variable="test";
$name="real_variable";
echo $$name;
You will get the following output :
test
Here :
$real_variable
contains test$name
contains the name of your variable :'real_variable'
$$name
mean “the variable thas has its name contained in$name
”- Which is
$real_variable
- And has the value
'test'
- Which is
EDIT after @Jhonny’s comment :
Doing a $$$
?
Well, the best way to know is to try 😉
So, let’s try this portion of code :
$real_variable="test";
$name="real_variable";
$name_of_name="name";
echo $name_of_name . '<br />';
echo $$name_of_name . '<br />';
echo $$$name_of_name . '<br />';
And here’s the output I get :
name
real_variable
test
So, I would say that, yes, you can do $$$
😉