.htaccess rewriteCond cascade multiple conditions with or / and

Below is the code to cascade multiple conditions “rewriteCond” with or / and using .htaccess in apache server.

If you want AND conditions or in other words, If u are checking the conditions so that the redirect would be done only if all the conditions return true, following code snippet looks for two conditions,

RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]

The main point here to remember is if u want to redirect only if the two conditions are true they should be in two lines.

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

If you want OR conditions or in other words, If u are checking the conditions so that the redirect would be done if any one of the conditions return true. In the following code snippet, the request_uri is compared with multiple patterns separated with | “OR”,

RewriteCond %{REQUEST_URI} ^/(old_dir|old_dir1|old_dir2).*$ [NC]
RewriteRule ^(.*)$ http://anilmaharjan.com.np/ [L,R=301]

Here the redirect will be done if any of the directory is tried to access namely, old_dir, old_dir1, old_dir2.

This is very helpful when you have changed your Websites CMS or framework and you want google bot to get redirected to your new pages.