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By N2H

May

27

htaccess Conditional Loop Redirect

May 27, 2008 |

Like the ‘if’ statement in many programming languages, you can use conditional rule to control mod_rewrite redirect. One very common use for RewriteCond is to prevent looping.

The following rule set causes any request starting with home to be redirected to /home.html. The resulting URL, however, starts with home and will therefore trigger the RewriteRule to be run again. The RewriteCond directive ensures that the rule will be skipped if the request is already for home.html and thus avoids this looping.

RewriteCond %{REQUEST_URI} !^/home\.html RewriteRule ^home /home.html [R]