HTTP response codes in Opencart

Simple technical information for programmers or those who want to become one.

HTTP response codes

• 100 - Continue - intermediate response, the request was successfully accepted;
• 200 OK - the request was accepted and correctly processed by the web server;
• 201 - Created - the server processed the request and created a new resource;
• 301 - Moved Permanently - the requested resource has permanently moved to a new address;
• 304 - Not Modified - the requested resource has not been modified, which means the cached version can be used;
• 400 - Bad Request - the request from the client to the web server is incorrectly composed;
• 401 - Unauthorized - access denied due to lack of authorization;
• 404 - Not Found - the server could not find the requested resource;
• 500 - Internal Server Error - internal server error;
• 501 - Not Implemented - the request method is not supported by the server and cannot be processed.

Of course, these codes are relevant not only for Opencart sites, but in general.

Regarding "Opencart", the most common error is 500.

This happens after installing modules or making other edits to the code.

This error needs to be deciphered by enabling PHP errors via the .htaccess file in the root of the site. How to do this is described in this article.