Wildcard subdomain + directory Nginx setup

labs.dev.conf

server {
	listen 80;
	server_name ~^(?<subdomain>.*)\.labs.dev$;
	root "/srv/labs/$subdomain/public";
	index index.php;
	
	location / {
		try_files $uri $uri/ /index.php?$query_string;
	}

	location ~* \.php$ {
		try_files $uri =404;
		fastcgi_pass 127.0.0.1:9000;
		fastcgi_index index.php;
		fastcgi_split_path_info ^(.+\.php)(/.+)$;
		include fastcgi_params;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		fastcgi_param SCRIPT_NAME $fastcgi_script_name;
	}
}