I need to have my index page be a PHP extention so I can run most recent blog posts on. Is this going to hurt the overal search engine optimization of the home page?
No, but if your changing them after web pages have already been indexed you need to do one of two things... 1. Parse PHP to *.html files (allows you to run php code inside *.html files) by adding the below code into your .htaccess file. RemoveHandler .html .htm AddType application/x-httpd-php .php .htm .html Code (markup): 2. 301 redirect old URLs to the new URLs by adding the below code for each URL into your .htaccess file Redirect 301 /oldwebpage.html http://www.newsite.com/newpage.php Code (markup):