Why Are My CodeIgniter URLs Redirecting Incorrectly After Moving to Production?

Troubleshooting CodeIgniter Base URL Configuration

CodeIgniter provides robust URL handling capabilities, and it's crucial to configure the base URL correctly for your production environment.

Problem Statement

After moving your CodeIgniter application from a development environment to a production server, you may encounter an issue where URLs are not redirecting properly due to an incorrect base URL configuration. The issue occurs when functions like "/home/test" redirect to "someurl.com/home/test" instead of "someurl.com/mysite/home/test."

Solution: Absolute Base URL

To rectify this issue, it's important to configure the base URL as an absolute URL, including the protocol. This means that instead of using:

$config['base_url'] = someurl.com/mysite/

you should use:

$config['base_url'] = "http://somesite.com/somedir/";

This absolute URL ensures that URLs are properly generated with the correct base path.

Additional Notes

• If you're using the CodeIgniter URL helper, the base_url() and site_url() functions will output the configured base URL.

• Passing arguments to these functions allows you to generate specific URLs, such as:

  • echo base_url('assets/stylesheet.css'); // "http://somesite.com/somedir/assets/stylesheet.css"
  • echo site_url('mycontroller/mymethod'); // "http://somesite.com/somedir/index.php/mycontroller/mymethod"

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