I have included the wordpress blog with my symfony website using the following.
//Added to the autoload.php require('../vendor/wordpress/wp-blog-header.php');
I put the blog in the main web folder, and .htaccess was installed as follows,
RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !/blog -------Add this condition to by pass the rewrite rules RewriteRule ^(.*)$ app.php [QSA,L]
This allows access to all other routes as usual, but the blog routes remain untouched and are transferred directly to wordpress. To get things out of the wordpress database, I was able to call the wordpress methods in my symfony controllers and pass them to my branch template.
$posts = get_posts('numberposts=10&order=ASC&orderby=post_title'); return array('posts'=>$posts);
I'm not sure that this is exactly what you are asking for, but this is how my wordpress blog and Symfony 2.0 site coexist. This is a real pain, although I have a wordpress template and a Symfony template that needs to be updated. I really want me to be able to come up with a better solution to bring them to great tools.
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