$HTTP_POST_VARS variable name

[jllydgnt]

I want to use the $HTTP_POST_VARS or $_POST array to access the name of the form input on the previous page. I know how to get the value of each input:

foreach($HTTP_POST_VARS as $value)
{
echo($value . "<br>");
}

Is there a way to get the name of each input?

[Night4554]

foreach($_POST as $key=>$value)

[superwormy]

To finish Night4545's example...

echo ($key);