Apache PHP localhost 更改响应太慢

Question

In my PHP localhost project, If I change something in my code [ex: echo a line] and refresh my browser the changes did not show immediately . I have to wait for 10-15 seconds and refresh my browser then it shows the changes. I tried on different browsers.

Note: I'm just using the apache server. And I don't have any error to start and stop the apache server.

Answer 1

Its probably the browser's cache. And the browser checks for updates in the website's pages every 10-15 secs, or precisely if its been an amount of time since the last cache, it rechecks if the cache is up to date, so it updates there.

See HTTP Cache .

You can stop it by adding:

Header always set Cache-Control "no-cache"
Header always set Pragma "no-cache"

But, cache can really improve the user page load speed for static content. So, think more about this before setting this in a production server.

You should usually always disable cache on development servers.