Set Wordpress SSL connection

wordpress-ssl

//in the functions.php of your theme add:
define('FORCE_SSL_ADMIN', true);

//in the .htaccess file of the root directory add:
<IfModule mod_rewrite.c>
    RewriteCond %{HTTP_HOST} ^(www\.domeinnaam\.nl|domeinnaam\.nl)$ [NC]
    RewriteCond %{SERVER_PORT} 80
    RewriteRule ^(.*)$ https://www.domeinnaam.nl/$1 [R=301,L]
</IfModule>

//Go to Wordpress admin > settings and set the url's as https or use a search and replace tool to change http:// to https://