Magento PHP

Magento : How to Redirect Non Logged in Users to Login Page

There are some many ways to redirect users/visitors in magento. But the most easy way i found is written below.
To redirect the users/visitors to login page you can add below line of code in head.phtml of your current theme.

<?php		// Added by Vaseem to redirect non logged in user to login page
$currentUrl = $this->helper('core/url')->getCurrentUrl();
echo 'currentUrl->'.$currentUrl.'<br>';
$loginStatus	=	'';
if ( strpos( $currentUrl, "customer" ) !== false ) {
	$loginStatus	=	1;
if(!$this->helper('customer')->isLoggedIn() && $loginStatus!=1){
	echo 'redirect to login page now';