PHP disables browser caching

2. //Tell the browser that the data returned is in XML format
3. header("Content-Type: text/xml;charset=utf -8" );
4. //Tell the browser not to cache data
5. header("Cache-Control: no-cache");
7. ?>

The above introduces the prohibition of browser caching in PHP, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.