upload project in web host and 404 page not found - codeigniter

Question

i have problem with codeigniter 3 , the project work fine in localhost , but when i upload my project in host , i see
404 Page Not Found
The page you requested was not found.
i remove .httaccess file , remove all of my routes , but dont work.
i have two controller :
class test extends CI_Controller {}
class testen extends CI_Controller {}
my htaccess file:
<IfModule mod_rewrite.c>
RewriteEngine On
# !IMPORTANT! Set your RewriteBase here and don't forget trailing and leading
# slashes.
# If your page resides at
# http://www.example.com/mypage/test1
# then use
# RewriteBase /mypage/test1/
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule .* http://%1%{REQUEST_URI} [R=301,L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>
edit:
my routes:
$route['default_controller'] = 'isogamsharghedonya';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
$route["en"] = "isogamsharghedonyaen";
$route["fa"] = "isogamsharghedonya";
$route["en"] = "isogamsharghedonyaen/index";
$route["en/isogam-sharghe-donya-service"] = "isogamsharghedonyaen/service";
$route["en/isogam-sharghe-donya-news"] = "isogamsharghedonyaen/news";
$route["en/isogam-sharghe-donya-tvc"] = "isogamsharghedonyaen/video";
$route["en/isogam-sharghe-donya-certificate"] = "isogamsharghedonyaen/certificate";
$route["en/isogam-sharghe-donya-honor"] = "isogamsharghedonyaen/honor";
$route["en/isogam-sharghe-donya-ceo"] = "isogamsharghedonyaen/aboutCeo";
$route["en/isogam-sharghe-donya-about-company"] = "isogamsharghedonyaen/aboutCompany";
$route["en/isogam-sharghe-donya-team"] = "isogamsharghedonyaen/aboutTeam";
$route["en/isogam-sharghe-donya-contact"] = "isogamsharghedonyaen/contact";
$route["en/send-message"] = "isogamsharghedonyaen/sendMail";
$route["en/insulation-orders"] = "isogamsharghedonyaen/order";
$route["en/new-insulation-orders"] = "isogamsharghedonyaen/newOrder";
$route["fa"] = "isogamsharghedonya/index";
$route["fa/" . rawurlencode("خدمات-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/service";
$route["fa/" . rawurlencode("اخبار-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/news";
$route["fa/" . rawurlencode("تیزر-های-تبلیغاتی-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/video";
$route["fa/" . rawurlencode("گواهینامه-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/certificate";
$route["fa/" . rawurlencode("افتخارات-و-جوایز-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/honor";
$route["fa/" . rawurlencode("مدیر-عامل-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/aboutCeo";
$route["fa/" . rawurlencode("درباره-شرکت-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/aboutCompany";
$route["fa/" . rawurlencode("تیم-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/aboutTeam";
$route["fa/" . rawurlencode("تماس-با-ایزوگام-شرق-دنیا")] = "isogamsharghedonya/contact";
$route["fa/" . rawurlencode("ارسال-پیام")] = "isogamsharghedonya/sendMail";
$route["fa/" . rawurlencode("سفارش-ایزوگام")] = "isogamsharghedonya/order";
$route["fa/" . rawurlencode("سفارش-جدید-ایزوگام")] = "isogamsharghedonya/newOrder";
require_once (BASEPATH . 'database/DB' . EXT);
require_once (BASEPATH . 'helpers/url_helper' . EXT);
require_once (BASEPATH . 'helpers/text_helper' . EXT);
$db = &DB();
$query = $db -> get('news');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> subjectFA)));
$route["fa/news/" . $string] = "isogamsharghedonya/newsDetails/$row->id";
}
$query = $db -> get('news');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> subjectEN)));
$route["en/news/" . $string] = "isogamsharghedonyaen/newsDetails/$row->id";
}
$query = $db -> get('product');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> nameFA)));
$route["fa/product/" . $string] = "isogamsharghedonya/productDetails/$row->id";
}
$query = $db -> get('product');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> nameEN)));
$route["en/product/" . $string] = "isogamsharghedonyaen/productDetails/$row->id";
}
$query = $db -> get('trailer');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> nameFA)));
$route["fa/video/" . $string] = "isogamsharghedonya/videoDetails/$row->id";
}
$query = $db -> get('trailer');
$result = $query -> result();
foreach ($result as $row) {
$string = rawurlencode(str_replace(' ', '-', strtolower($row -> nameEN)));
$route["en/video/" . $string] = "isogamsharghedonyaen/videoDetails/$row->id";
}

Answer 1

Your controller and model files must begin with a capital letter.
An example: controllers/Index.php, models/Index_model.php
code in CI 3 core for controllers load (/system/core/router.php):
protected function _set_default_controller()
{
//... blah-blah-blah ...
if ( ! file_exists(APPPATH.'controllers/'.$this->directory.ucfirst($class).'.php'))
{
// This will trigger 404 later
return;
}
//...blah-blah-blah...
}
It work in localhost, because you system is Windows. Unix like systems is case sensitive in work with files.

Answer 2

As i reviewed your code the first thing that you have rectify is that the way you have declare your controller since it is a good practice to define your controller as class Test extends CI_Controller instead of class test extends CI_Controller as you have declared some time it might create error and the second thing is that you have to check your .htaccess file is uploaded to your root directory of the project and as well as you also check in your routes file whether you have written the appropriate routing rule for your declared controller as well as the is the method is present in your class which is defined in your routes for the same