nginx rewrite rules for Codeigniter are not working correctly

I am trying to use nginx server in MAMP instead of apache server for Codeigniter for the first time. I converted my apache htaccess rewrite rules to nginx rewrite rules. But it is showing index.php file code from my file not my website. Here is my apache htaccess rules,

DirectoryIndex index.php
RewriteEngine on
RewriteCond $1 !^(index\.php|images|css|js|robots\.txt|favicon\.ico)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ ./index.php/$1 [L,QSA]

And here is my nginx configuration file,

http {
include                  mime.types;
default_type             text/html;
gzip                     on;
gzip_types               text/css text/x-component application/x-javascript 
application/javascript text/javascript text/x-js text/richtext image/svg+xml text/plain 
text/xsd text/xsl text/xml image/x-icon;

sendfile                 on;

server {
    listen               80 default_server;

    # MAMP DOCUMENT_ROOT !! Don't remove this line !!
    root "C:/MAMP/htdocs/aia_inventory/";

    access_log  C:/MAMP/logs/nginx_access.log;

    error_log  C:/MAMP/logs/nginx_error.log;

    index index.html index.htm index.php;
    #autoindex on;
    #server_name localhost;
    location ~/ {
        #root C:/MAMP/htdocs/aia_inventory/;
        #index index.html index.php;
        try_files $uri $uri/ /index.php/$request_uri;

        if (!-e $request_filename){
            rewrite ^/(.*)$ /index.php?/$1 last;
            break;
        }
    }

    location ~* ^/(assets|files|robots\.txt) { }

    location ~* /MAMP(.*)$ {
    root             C:/MAMP/bin;
        index            index.php;

        location ~ \.php$ {
            try_files        $uri =404;
            fastcgi_pass     127.0.0.1:9100;
            fastcgi_param    SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include          fastcgi_params;
        }
    }

    location ~* /phpMyAdmin(.*)$ {
    root             C:/MAMP/bin;
        index            index.php;

        location ~ \.php$ {
            try_files        $uri =404;
            fastcgi_pass     127.0.0.1:9100;
            fastcgi_param    SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include          fastcgi_params;
        }
    }

    location ~* /phpLiteAdmin(.*)$ {
    root             C:/MAMP/bin;
        index            phpliteadmin.php index.php;

        location ~ \.php$ {
            try_files        $uri =404;
            fastcgi_pass     127.0.0.1:9100;
            fastcgi_param    SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include          fastcgi_params;
        }
    }

    location ~* /SQLiteManager(.*)$ {
    root             C:/MAMP/bin;
        index            index.php;

        location ~ \.php$ {
            try_files        $uri =404;
            fastcgi_pass     127.0.0.1:9100;
            fastcgi_param    SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include          fastcgi_params;
        }
    }

    #location /icons {
    #   alias /Applications/MAMP/Library/icons;
    #   autoindex on;
    #}

    #location /favicon.ico {
    #   alias /Applications/MAMP/bin/favicon.ico;
    #    # log_not_found off;
    #    # access_log off;
    #}

    location ~ \.php$ {
        try_files        $uri =404;
        fastcgi_pass     127.0.0.1:9100;
        fastcgi_param    SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include          fastcgi_params;
    }

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

    # location ~* \.(gif|jpg|png|pdf)$ {
    #   expires          30d;
    # }

    # location = /robots.txt {
    #   allow all;
    #   log_not_found off;
    #   access_log off;
    # }

    # location ~* \.(txt|log)$ {
    #   allow 127.0.0.1;
    #   deny all;
    # }

    # location ~ \..*/.*\.php$ {
    #   return 403;
    # }

    #location /nginx_status {
    #   stub_status      on;
    #   access_log       off;
    #   allow            127.0.0.1;
    #   deny             all;
    #}
}
}

I am not understanding where am I missing. My rules are working on apache server. But on nginx server, it shows only index.php file raw code. Thanks in advance.


from nginx rewrite rules for Codeigniter are not working correctly