新聞財經娛樂♬資訊 News Economy

Wow thanks solved by he timestamp issue

So, my problem is not solvable?

"duncanb7" is only half right.  Browsers will cache the HTML that PHP files generate which is the part that you see.

but "duncanb7" said the browsers dont cache php files!?

You can't... because it isn't.  Your browsers are doing the caching.

ok tested many times and eveything is right o the pc (chrome browser).
However weird things appearing on my mobile!!!
i changed the 1.php and 2.php files on server, on pc gets refreshed always and get the new and latest version, but on my mobile it wont get the last file till i either:
1- go to the application and clear on clear cache, then reopen the application.
2- or, click on the address bar and click go, like pressing F5, so it seems that mobiles are caching the contents?
Any ideawhile mobile is caching he php filesand how to avoid this?
I am using acroid kitakt and chrome browser

Wow, Ive jsut test it and seems everything is right, i will do more testing and get back to you

it won't , server language page  won't be cached,

Please click "request attention" button, other experts will assist on this subject.

Duncan

Dave Baldwin:
How can make server dont allow caching at all?

duncanb7:
I tried both, php and asp.net, but same result as htlml

You have discovered browser caching where your browser uses the last version of a page that it has loaded unless you force it to get a new version from the server.  The only way to stop that is to set the cache 'expiration' time to 0 on the server.  

While it is tempting to do that as a developer, caching actually speeds up browsing for the 'normal' user by not having to download files that have not changed.  Google's PageSpeed recommendations are that you make the cache expiration much Longer rather than shorter.  Cached files are displayed more quickly than files that have to be retrieved from the server.

I would recommend that you get used to pressing F5 while you're still developing the page.  Shortening the expiration to 0 only benefits you.  Overall, it slows your site down for your users.  

One other thing to note is that CSS and javascript files are also cached and if your 'new' page uses the same file names as the previous versions of CSS and javascript files, they may not load as you expect either.  A few times I have had to load CSS and/or javascript files in the address bar to pick up the new version and then go back to the page and press F5 to get everything to load properly.