Need to obtain the name of Global variable $_REQUEST

Question

I need to obtain the identifier, name of Global variables. Eg. If I have $_REQUEST['email'] I need to obtain the word email within the $_REQUEST variable.

Answer 1

It's not very clear from this what you want. If you need a list of available keys in $_REQUEST, you can use array_keys($_REQUEST).

Answer 2

This will print every key with its value:

foreach($_REQUEST as $key => $value) {
    print "{$key} => {$value}<br />";
}