Are there any specific headers that can be sent to a server to receive a response code like 404 or 200 in PHP?

To receive specific response codes like 404 or 200 from a server in PHP, you can use the header() function to send HTTP headers before any actual output is sent. By setting the appropriate header, you can indicate to the server the desired response code. For example, to send a 404 Not Found response code, you can use header('HTTP/1.0 404 Not Found'); before any other output is sent.

// Send a 404 Not Found response code
header('HTTP/1.0 404 Not Found');