How to output the URL of the variable $id such as tool.php?info=200@qq@ account $id

How to output the variables from the URL $id such as tool.php?info=200@qq@ account $id
$id =$_session[' id '];
$info =$_get[' info '];
$arr =expolde ("@", $info);

May have a friend will ask directly $id directly output the value of $id;

Because $id is the admin write-in then the user clicks on this connection tool.php?info= @qq @ account $id
The user's ID will then be automatically exported.

I thought about using the Eval function but there are friends who say it's not safe. Would you like to ask if there are other ways to the array $arr[2] $id output into a variable $id it??



------Solution--------------------
Assuming that the final data is still taken from $_session, the
$v = Preg_replace ('/\$ (\w+)/ie ', ' $_seeion[' $ "] ', $v);

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