.htaccess doesn't work properly

I have some url that needs to redirect one by one in .htaccess. however I didn't get it work. it says too many redirection. the old url was serving "/" with slash. new sytem doesn't have slash. So I have to redirect to non-slash version.
could you check my htaccess if there is anything wrong. Thanks.

RewriteEngine on
#redirect index.php main domain name
RewriteCond %{THE_REQUEST} ^[A-Z]+\ /([^/]+/)*index\.php([#?][^\ ]*)?\ HTTP/
RewriteRule ^(([^/]+/)*)index\.php$ http://www.site.com/$1 [R=301,L]

#redirect tp without extension version if someone type with .php extension
RewriteCond %{THE_REQUEST} ^[A-Z]+\ /([^/]+/)*[^.#?\ ]+\.php([#?][^\ ]*)?\ HTTP/
RewriteRule ^(([^/]+/)*[^.]+)\.php http://www.site.com/$1 [R=301,L]

#www redirect to with www version
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

# .php remove .php extension
RewriteRule %{REQUEST_URI} !\.(gif|jpe?g|png|css|js|zip)$
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php

redirect 301 /page/ http://www.site.com/page <--- This line needs to work.

 

Add this to to your older .htaccess file

RewriteBase /

PHP:

...and start over

 

You should replace this \ slash. then it will work.