php - CodeIgniter 500 Internal Server Error

Question

I downloaded a PHP script written using CodeIgniter. when I run it from the localhost, on going to the admin folder, it shows localhost again. Also when running from my web host, it shows a 500 Internal Server Error.

I run the site from http://localhost/myproj It works. Then when I try to go to the admin page which is at http://localhost/myproj/administrator, it gives a 500 Internal Server Error.

I read here that this might be due to a wrong code in the .htaccess file. This is my present .htaccess file

RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)/$ $1 [L,R=301]

RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php/$1 [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php/$1 [L]

# Without mod_rewrite, route 404's to the front controller
ErrorDocument 404 /index.php

Please help me. I know it might be a very small problem, but I'm unable to find the error.

Answer 1

The problem with 500 errors (with CodeIgniter), with different apache settings, it displays 500 error when there's an error with PHP configuration.

Here's how it can trigger 500 error with CodeIgniter:

1. Error in script (PHP misconfigurations, missing packages, etc...)
2. PHP "Fatal Errors"

Please check your apache error logs, there should be some interesting information in there.