webrootに.htaccessをおいたら動いた

[php]
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php [QSA,L]
</IfModule>

[/php]

appのある同じ階層に.htaccessをおいたら動いた
[php]
<IfModule mod_rewrite.c>
AddHandler x-httpd-php528 .php

Options +FollowSymLinks
RewriteEngine on
RewriteRule ^$ app/webroot/ [L]
RewriteRule (.*) app/webroot/$1 [L]
</IfModule>
[/php]