PHP / CodeIgniter: Nginx throws 404 and ignores class and method

Question

I'm using LEMP (Linux Nginx MySQL PHP).

I'm trying to follow the tutorial here: http://www.codeigniter.com/user_guide/tutorial/static_pages.html

This is my controllers/Pages.php

<?php
class Pages extends CI_Controller {

    public function view($page = 'home') {

        if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
        {
            // Whoops, we don't have a page for that!
            show_500();
        }

        show_500();
        $data['title'] = ucfirst($page); // Capitalize the first letter

        $this->load->view('templates/header', $data);
        $this->load->view('pages/'.$page, $data);
        $this->load->view('templates/footer', $data);
    }

}
?>

In config/routes.php, this is the default controller:

$route['default_controller'] = 'welcome';

Now, when I go to

http://127.0.0.1/CodeIgniter-3.0.0/index.php

I get a screen which says:

Welcome to CodeIgniter!
The page you are looking at is being generated dynamically by CodeIgniter.
If you would like to edit this page you'll find it located at:

    application/views/welcome_message.php

The corresponding controller for this page is found at:

    application/controllers/Welcome.php

If you are exploring CodeIgniter for the very first time, you should start by reading the User Guide.

But, when I go to:

http://127.0.0.1/CodeIgniter-3.0.0/index.php/pages

or

http://127.0.0.1/CodeIgniter-3.0.0/index.php/pages/view

I get a 404 error. I'm not raising a 404 error anywhere in my Pages class, so I'm assuming my Pages class is not even being called. Any idea why I'm getting a 404 error / why my Pages class in not being called?

Edit:

http://127.0.0.1/CodeIgniter-3.0.0/index.php/welcome

and

http://127.0.0.1/CodeIgniter-3.0.0/index.php/welcome/index

return 404 errors as well. It's weird because in Welcome.php it says:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Welcome extends CI_Controller {


    /**
     * Index Page for this controller.
     *

     * Maps to the following URL
     *      http://example.com/index.php/welcome
     *  - or -
     *      http://example.com/index.php/welcome/index
     *  - or -
     * Since this controller is set as the default controller in
     * config/routes.php, it's displayed at http://example.com/

Edit 2: It is Nginx throwing a 404. I think it might have to do with my Nginx configuration, which is this:

# You may add here your
# server {
#   ...
# }
# statements for each of your virtual hosts to this file

##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
#
# Generally, you will want to move this file somewhere, and start with a clean
# file but keep this around for reference. Or just disable in sites-enabled.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;

    root /usr/share/nginx/html;
    index index.php index.html index.htm;

    # Make site accessible from http://localhost/
    server_name localhost;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
        # Uncomment to enable naxsi on this location
        # include /etc/nginx/naxsi.rules
    }

    # Only for nginx-naxsi used with nginx-naxsi-ui : process denied requests
    #location /RequestDenied {
    #   proxy_pass http://127.0.0.1:8080;    
    #}

    error_page 404 /404.html;

    # redirect server error pages to the static page /50x.html
    #
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
        }
    #   fastcgi_split_path_info ^(.+\.php)(/.+)$;
    #   # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    #
    #   # With php5-cgi alone:
    #   fastcgi_pass 127.0.0.1:9000;
    #   # With php5-fpm:
    #   fastcgi_pass unix:/var/run/php5-fpm.sock;
    #   fastcgi_index index.php;
    #   include fastcgi_params;
    #}

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #   deny all;
    #}
}


# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
#   listen 8000;
#   listen somename:8080;
#   server_name somename alias another.alias;
#   root html;
#   index index.html index.htm;
#
#   location / {
#       try_files $uri $uri/ =404;
#   }
#}


# HTTPS server
#
#server {
#   listen 443;
#   server_name localhost;
#
#   root html;
#   index index.html index.htm;
#
#   ssl on;
#   ssl_certificate cert.pem;
#   ssl_certificate_key cert.key;
#
#   ssl_session_timeout 5m;
#
#   ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;
#   ssl_ciphers "HIGH:!aNULL:!MD5 or HIGH:!aNULL:!MD5:!3DES";
#   ssl_prefer_server_ciphers on;
#
#   location / {
#       try_files $uri $uri/ =404;
#   }
#}

I'm thinking maybe the issue is in this part:

location / {
            # First attempt to serve request as file, then
            # as directory, then fall back to displaying a 404.
            try_files $uri $uri/ =404;
            # Uncomment to enable naxsi on this location
            # include /etc/nginx/naxsi.rules
        }

Maybe because Nginx first tries to serve the following URL as a file and directory

http://127.0.0.1/CodeIgniter-3.0.0/index.php/welcome/index

and because the URL above is neither a file nor directory, Nginx is throwing a 404?

Answer 1

if you are in unix system, capitalization can result this issue. check it. it might work. try http://127.0.0.1/CodeIgniter-3.0.0/index.php/Pages (capital P as controller's name is Page not page).

Its strange but same issue happened with me and i was able to troubleshoot and solve it this way. i had to rename controllers name using small letters.

Answer 2

Try this

<?php
class Pages extends CI_Controller {

    public function view($page = 'home') {

        if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php'))
        {
            // Whoops, we don't have a page for that!
            show_404();
        }

        //show_500(); comment this line

        $data['title'] = ucfirst($page); // Capitalize the first letter
        $this->load->view('templates/header', $data);
        $this->load->view('pages/'.$page, $data);
        $this->load->view('templates/footer', $data);
    }

}
?>

Note: Page not found Error is 404 not 500