Nginx disable url rewrite for specific path / url - mod-rewrite

Question

I have the following nginx configuration for the url rewrite
location / { ##merge
try_files $uri $uri/ /index.php?q=$uri&$args;
}
location /devtools/phpmyadmin/ { ##merge
root /var/www/domain.tld/web;
location ~ \.php$ {
try_files $uri =404;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/lib/php5-fpm/web2.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors on;
}
}
in the /var/www/domain.tld/web/ directory have an /api/ directory and I want disable for the url rewrite for this. So if I woud like access from url with index.php: http://domain.tld/api/index.php/function/method
How can I modify the nginx config file?
Edit:
I try the following rewrite, but not working:
location = /api {
rewrite ^ /api/index.php;
}

Answer 1

I confess that I do not understand your configuration file. Generally, you would define a root to be inherited by all (or most) of your location blocks. And usually a separate location ~ \.php$ block to handle off-loading .php scripts to a PHP processor via FastCGI.
Ignoring your location /devtools/phpmyadmin/ block for the moment, a typical implementation would look like this:
root /var/www/domain.tld/web;
location / {
try_files $uri $uri/ /index.php?q=$uri&$args;
}
location ~ \.php$ {
try_files $uri =404;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/lib/php5-fpm/web2.sock;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors on;
}
The nginx directives are documented here.
If you want URIs that begin with /api to use a different controller, you could add:
location /api {
try_files $uri $uri/ /api/index.php;
}
I cannot see the purpose of the location /devtools/phpmyadmin/ block, as it does not seem to add any more functionality.