PHP：file_get_contents（）强制从服务器而不是缓存中读取文件

Question

I am trying to read my constants from a JSON file using

$const = file_get_contents('/myfolder/const.json');

Problem is this will always read the file from cache and not from my local XAMPP server. During development phase, this file is dynamic due to edits and I end up clearing the browser cache everytime there's a change in the file. How can I force to read from the server always (latency in doing this during development phase is fine. I will switch to normal post deployment - how?)? Any help is appreciated.

Answer 1

There are a couple of "accepted" solutions.

The first is to add a timestamp to the file like

$const = file_get_contents('/myfolder/const.json?'.date("Ymdhis"));

You can also try this

header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");

I suggest adding one of these, clearing your cache and then try to run the code. Adding the timestamp to the file has worked for me, when I add it before I start devving, and reloading the page.