CodeIgniter Abort 404 - PHP

CodeIgniter is a popular PHP framework that is used to develop web applications quickly and easily. Sometimes, you may encounter an issue where your application returns a 404 error page. This can be frustrating, especially when you are not sure how to fix it. Fortunately, with CodeIgniter, there are a few simple steps you can take to prevent a 404 error page from appearing.

What is a 404 Error Page?

A 404 error page is a standard HTTP response code that indicates that the requested resource is not found on the server. It usually indicates that the URL is invalid or that the page has been moved or deleted.

How to prevent a 404 error page with CodeIgniter

If you are using CodeIgniter, there are a few things you can do to prevent a 404 error page from appearing. Here are the steps you can follow:

1. Check the URL - The first thing you should do is check the URL of the page that is returning the 404 error page. Make sure that the URL is correct and that it is pointing to the right page.

2. Check the Controller - If the URL is correct, you should check the controller to see if it is set up correctly. Make sure that the controller is named correctly and that it is located in the correct directory.

3. Check the Routing - If everything appears to be correct, you should check the routing to see if it is set up correctly. Make sure that the routing is configured correctly and that it is pointing to the correct controller and method.

4. Use the show_404() Function - If you are unable to fix the issue, you can use the show_404() function to display a custom 404 error page. To do this, simply add the following code to your controller:

public function index() {
    $this->output->set_status_header('404');
    $this->load->view('404');
}

This will display the 404.php file located in the views directory.

Conclusion

Preventing a 404 error page is important for maintaining the usability and functionality of your web application. By following the steps outlined above, you can prevent and handle 404 error pages with ease in your CodeIgniter application.