将$ _SESSION键转换为局部变量

Question

Today I have an interesting problem, where I need to take data stored in $_SESSION['form'][$key] and convert it to a local variable.

For example, lets say $_SESSION['form'] contains the following session keys:

$_SESSION['form']['name']
$_SESSION['form']['email']
$_SESSION['form']['age']

How can I convert these $_SESSION variables to:

$name
$email
$age

I was thinking that a for loop would work well for this, but I am not sure how to do that properly for this situation.

Thank you for your help!

Answer 1

You need to use the PHP extract function.

in your case it should be

<?php

$name = "its existing variable"; \
ote this existing variable ;)

extract($_SESSION['form'], EXTR_PREFIX_SAME, "from_session");

echo "$from_session_name, $email, $age, $name
";

?>