如何在同一域上配置NGINX for codeigniter和laravel

我需要为两个php框架在同一个域的不同位置配置nginx . example.com/ - codeigniter（root / var / www / html / codeigniter）

example.com/api - laravel 5.2（root / var / www / html / laravel）

这里是我的例子，但它们不起作用 .

server {

    listen 80;
    server_name example.com www.example.com;
    root /var/www/html/codeigniter;

    index index.php;

    location / {
        try_files $uri $uri/ /index.php;
    }   

    location ~ \.php$ {
        try_files $uri /index.php =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_intercept_errors off;
        fastcgi_buffer_size 16k;
        fastcgi_buffers 4 16k;
    }


    location /api {
        root /var/www/html/laravel/public/;
        index index.php index.html index.htm;

        try_files $uri $uri/ index.php?$query_string;

        location ~ \.php$ {
            try_files $uri /index.php =500;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
            fastcgi_index index.php;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_intercept_errors off; 
            fastcgi_buffer_size 16k; 
            fastcgi_buffers 4 16k;                       
        }


    }    
}

在第一个例子中，完美地在路线example.com/*上工作代码，但是laravel在路由上不起作用：

/api - codeigniter return 404 page not found,
 /api/index.php - laravel return 404 because this page not exists,
 /api/user/ -codeigniter also return 404 page

此配置也不起作用：

server {
        listen 80;

        server_name example.com;

        root /var/www/;

        index index.php index.html index.htm;

        charset utf-8;

        access_log /var/log/nginx/example.com-access.log;
        error_log  /var/log/nginx/examplw.com-error.log error;

        sendfile off;

        client_max_body_size 100m;



        location /api {
                root /var/www/html/laravel/public;
                index index.php index.html index.htm;

                try_files $uri $uri/ /index.php?$query_string;

                location ~ \.php$ {
                        try_files $uri /index.php =500;
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_intercept_errors off;
                        fastcgi_buffer_size 16k;
                        fastcgi_buffers 4 16k;
                }

                location ~ /\.ht {
                        deny all;
                }
        }

        location / {
                root /var/www/html/codeigniter;
                index index.php index.html index.htm;

                try_files $uri $uri/ /index.php?$query_string;

                location ~ \.php$ {
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_intercept_errors off;
                        fastcgi_buffer_size 16k;
                        fastcgi_buffers 4 16k;
                }

                location ~ /\.ht {
                        deny all;
                }
        }


}

此配置也不起作用example.com - codeigniter工作正常，example.com/api - codeigniter返回404 example.com/api/index.php - laravel返回404

任何人都可以帮我找到正确的配置方法吗？