Updating .htaccess

web/.htaccess

@@ -1,9 +1,52 @@
-<IfModule mod_rewrite.c>
-    Options -MultiViews
+# Use the front controller as index file. It serves as a fallback solution when
+# every other rewrite/redirect fails (e.g. in an aliased environment without
+# mod_rewrite). Additionally, this reduces the matching process for the
+# start page (path "/") because otherwise Apache will apply the rewriting rules
+# to each configured DirectoryIndex file (e.g. index.php, index.html, index.pl).
+DirectoryIndex app.php
 
+<IfModule mod_rewrite.c>
     RewriteEngine On
-    RewriteCond %{REQUEST_FILENAME} !-f
-    RewriteRule ^ index.php [L]
-    # The previous redirection doesn't work on MAMP. Use next line instead
-    #RewriteRule ^ web/index.php [L]
+
+    # Determine the RewriteBase automatically and set it as environment variable.
+    # If you are using Apache aliases to do mass virtual hosting or installed the
+    # project in a subdirectory, the base path will be prepended to allow proper
+    # resolution of the app.php file and to redirect to the correct URI. It will
+    # work in environments without path prefix as well, providing a safe, one-size
+    # fits all solution. But as you do not need it in this case, you can comment
+    # the following 2 lines to eliminate the overhead.
+    RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
+    RewriteRule ^(.*) - [E=BASE:%1]
+
+    # Redirect to URI without front controller to prevent duplicate content
+    # (with and without `/app.php`). Only do this redirect on the initial
+    # rewrite by Apache and not on subsequent cycles. Otherwise we would get an
+    # endless redirect loop (request -> rewrite to front controller ->
+    # redirect -> request -> ...).
+    # So in case you get a "too many redirects" error or you always get redirected
+    # to the start page because your Apache does not expose the REDIRECT_STATUS
+    # environment variable, you have 2 choices:
+    # - disable this feature by commenting the following 2 lines or
+    # - use Apache >= 2.3.9 and replace all L flags by END flags and remove the
+    #   following RewriteCond (best solution)
+    RewriteCond %{ENV:REDIRECT_STATUS} ^$
+    RewriteRule ^app\.php(/(.*)|$) %{ENV:BASE}/$2 [R=301,L]
+
+    # If the requested filename exists, simply serve it.
+    # We only want to let Apache serve files and not directories.
+    RewriteCond %{REQUEST_FILENAME} -f
+    RewriteRule .? - [L]
+
+    # Rewrite all other queries to the front controller.
+    RewriteRule .? %{ENV:BASE}/app.php [L]
+</IfModule>
+
+<IfModule !mod_rewrite.c>
+    <IfModule mod_alias.c>
+        # When mod_rewrite is not available, we instruct a temporary redirect of
+        # the start page to the front controller explicitly so that the website
+        # and the generated links can still be used.
+        RedirectMatch 302 ^/$ /app.php/
+        # RedirectTemp cannot be used instead
+    </IfModule>
 </IfModule>