htaccess 3 parameters rewrite rule - .htaccess

Question

I know this problem is asked before, but i don't find anything
i try to pass 3 variable in htaccess the url change normaly but i cant't get the third variable
this is my htaccess file
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-z]+)\/?$ index.php?r=$1 [NC]
RewriteRule ^([a-z]+)/([a-z]+) index.php?r=$1&s=$2 [L]
RewriteRule ^([a-z]+)/([0-9]+) index.php?r=$1&id=$2 [L]
RewriteRule ^([a-z]+)/([0-9]+)/([a-z]+) index.php?r=$1&id=$2&s=$3 [L]

Answer 1

RewriteRule ^([a-z]+)/([0-9]+) index.php?r=$1&id=$2 [L]
RewriteRule ^([a-z]+)/([0-9]+)/([a-z]+) index.php?r=$1&id=$2&s=$3 [L]
These 2 rules conflict. A URL of the form /abc/123/def is also matched by the first rule, so the second rule is never processed.
You could either:
Include an end-of-string anchor ($) on the first rule pattern, so that it only matches /abc/123 and not /abc/123/def. For example:
RewriteRule ^([a-z]+)/([0-9]+)$ index.php?r=$1&id=$2 [L]
OR, reverse these two directives, so the rule for 3 parameters takes priority:
RewriteRule ^([a-z]+)/([0-9]+)/([a-z]+) index.php?r=$1&id=$2&s=$3 [L]
RewriteRule ^([a-z]+)/([0-9]+) index.php?r=$1&id=$2 [L]
You should probably include end-of-string anchors on all your patterns, otherwise, they are likely to match too much. eg. /abc/123/def/for/bar/baz.jpg is matched by the 3rd and 4th rule without an end-of-string anchor. If you add end-of-string anchors then the filesystem conditions could probably be removed altogether.
As #IMSoP noted in comments, those two conditions (ie. RewriteCond directives) only apply to the first RewriteRule that follows. The first rule is unlikely to match a real file anyway, so the conditions aren't really doing anything currently.