What is cache control in PHP and how can I implement it?

What is cache control in PHP and how can I implement it?

Cache control in PHP refers to the HTTP headers that manage how browsers and proxies cache your web pages. You can implement it using the header() function.

Can you give me an example of how to set cache control headers?

Sure! You can use the following code:

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

What do these headers actually do?

These headers tell the browser not to cache the page, ensuring that users always see the most up-to-date content.

Are there any scenarios where I should allow caching?

Yes, for static resources like images, CSS, and JavaScript files, you can set longer cache durations to improve performance.