What does this session code do?

[rcoursey]

foreach ($_SESSION as $key => $val) {${$key} = $val;}

I don't understand the {${$hey}=$val;} especially.

[barand]

Looks like it sets the value of a variable, whose name is the current value of $key, to the value in $val.

So if $key = "name", then it sets $name = $val.

Much easier to

extract ($_SESSION);

hth