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

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

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

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November 13, 2010 at 3:45 PM

$Message = "first";
$first= "second";

echo $message //Output   first
echo $$message //output  second

It means $message is a variable and $$Message is variable of variable

A variable of variable allows us to change the name of variable dynamically.

Thanks

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