CODE EXAMPLE FOR PHP

wp-admin redirecting to the https wordpress

So if you are having this issue only when you go to ../wp-admin then it is 
because you have force ssl admin set to true. You can find this in 
wp-config.php in the root of your WordPress site, you need to set this option 
to false.

define('FORCE_SSL_ADMIN', false);

I am assuming your siteurl in the wp_options table in the WordPressdatabase is 
set to a http:// address.