What are some best practices for clearing browser cache in PHP applications?

When developing PHP applications, it's important to clear the browser cache to ensure that users are seeing the latest version of your website or web application. One way to do this is by sending appropriate headers in the HTTP response to instruct the browser to clear its cache. 

// Clear browser cache
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0"); // Proxies.

Keywords

HTTP headers Cache-Control Expires session_start ob_start

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