SSL and PHP how to turn on/off SSL for entire website

Hello,

Im new to PHP and trying to help out a customer that has an all PHP website that currently has HTTPS turned on for the entire site.  Looking at the .htaccess file on the server, I noticed the following code:

RewriteEngine On

#RewriteBase /~mysite

RewriteCond %{HTTP_HOST} ^mysite.com

RewriteRule (.*) https://www.mysite.com/$1 [R=301,L]

RewriteCond %{HTTPS} off

Does this code turn SSL on for the entire website? If so, can I change by removing:

RewriteRule (.*) https://www.mysite.com/$1 [R=301,L]

and I only want to turn HTTPS on for a few PHP scripts/pages, how would I do this?

this is example of .htaccess to turn on ssl for specific pages and turn it off for other pages

RewriteEngine On

# Send everyone in these dirs and pages to https
RewriteCond %{HTTP_HOST} ^www\.somewebsite\.com$ [NC]
RewriteCond %{REQUEST_URI} clubs [OR,NC]
RewriteCond %{REQUEST_URI} dealer/ [OR,NC]
RewriteCond %{REQUEST_URI} login.html [OR,NC]
RewriteCond %{REQUEST_URI} dealer_registration.html [OR,NC]
RewriteCond %{REQUEST_URI} club_registration.html [OR,NC]
RewriteCond %{REQUEST_URI} contact.html [OR,NC]
RewriteCond %{REQUEST_URI} dealer_club_contact.html [OR,NC]
RewriteCond %{REQUEST_URI} members [OR,NC]
RewriteCond %{REQUEST_URI} secure/ [NC]
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R,L,QSA]

# Otherwise, make sure they aren't in https
RewriteCond %{SERVER_PORT} ^443$
RewriteCond %{REQUEST_URI} !dealer/ [NC]
RewriteCond %{REQUEST_URI} !login.html [NC]
RewriteCond %{REQUEST_URI} !dealer_registration.html [NC]
RewriteCond %{REQUEST_URI} !club_registration.html [NC]
RewriteCond %{REQUEST_URI} !contact.html [NC]
RewriteCond %{REQUEST_URI} !clubs [NC]
RewriteCond %{REQUEST_URI} !secure [NC]
RewriteCond %{REQUEST_URI} !securimage [NC]
RewriteCond %{REQUEST_URI} !members [NC]
RewriteCond %{REQUEST_URI} !images [NC]
RewriteCond %{REQUEST_URI} !css [NC]
RewriteCond %{REQUEST_URI} !jscripts [NC]
RewriteRule ^(.*)$ http://%{HTTP_HOST}%{REQUEST_URI} [R,L,QSA]

Thank you, this helps me but Im still green at all of this.  This website has only a few pages that will be HTTPS, less than 5, the rest are all HTTP, so is there an easier way to make the entire website HTTP and only this 5 or fewer pages HTTPS? Also, what is the stuff in the brackets at the end [OR, NC]??