what is the difference between $message and $$message?

$Message means simple variable store data.
$$Message means variable variable.
That is, a variable name which can be set and used dynamically
$Message = 'hello';

print $Message; // print hello

$$Message = 'world';

means $hello ='world';

now if u print $$Message;
menas $hello;// print world;

if u print $Message $($Message); // print hello world;



Piyush Patel
Software Engineer
Spacecom Technologies Ltd.
Mumbai
Cell : 9833859616