htaccess why is site redirecting to // - html

Question

In my htaccess I am redirecting all non https to https.
It works, but its also adding in an extra '/', so the url is
'https: //www.[MY SITE URL].co.uk//'
Why is this? To be honest, I don't really know what all this in my htaccess is doing, its copied from googling answers to 'redirect all requests to https'
My htaccess:
Options -MultiViews
RewriteEngine On # Turn on the rewriting engine
RewriteBase /
#RewriteCond %{HTTP_HOST} ^(www\.)?jobooz\.com [NC]
#RewriteRule ^(.*)$ https://www.jobooz.co.uk/$1 [R=301,L,NC]
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI}/$1 [R=301,L]
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI}/$1
RewriteRule ^/?$ /php/index.php [NC,L] # Home page
I've also noticed any deeper urls like '/search-jobs/jobs-near-me' that I add to the url then get duplicated too, to '/search-jobs/jobs-near-me/search-jobs/jobs-near-me' when redirected to https.
All urls work fine if I go directly to the https version.
Any help appreciated, thanks.

Answer 1

The following rewrite rule has a problem:
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI}/$1 [R=301,L]
The gist of why you are seeing repeated fragments in the rewritten URL is that (.*) matches everything, and that already includes the host and URI. Instead, you can try redirecting any incoming request on port 80 to HTTPS.
RewriteCond %{SERVER_PORT} ^80$
RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [L,R]