Support for HTTPS of Admin Page

I am using WordPress. I will configurate the Apache to Redirect Admin Page to https server. But when I will using the adminstration function. check_admin_referer will reject my request. I have hack the function for checking https URL.

function check_admin_referer() {
$adminurl = strtolower( get_settings(‘siteurl’) ) . ‘/wp-admin’;
$referer = strtolower( $_SERVER[‘HTTP_REFERER’] );
/* Checking HTTPS */
if (strstr($referer, “https://”)) $referer = “https://” . substr($referer, 8);
/* Checking HTTPS */
if ( !strstr($referer, $adminurl) )
die(__(‘Sorry, you need to enable sending referrers for this feature to work.’));
do_action(‘check_admin_referer’);
}