In the header of my doc I am defining a email and password. I would like to user local storage. However I am having trouble loading items from localstorage into my php vars.
You cannot access localstorage via PHP. You need to write some javascript that sends the localstorage data back to the script.
If you are using jQuery, do something like the following.
set_page.php
login_page.php
login_response.php
$email = $_POST['email'];
$password = $_POST['password'];
//Handle your login here. Set session data, etc. Be sure to sanitize your inputs.
?>
Remember, people can edit what is in their local storage, so never ever trust user input. A crafty intruder could simply start posting data to your login_response.php page as well.