browser back button/caching and php

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Can the browser back button or browser caching be turned on or off via php?

Thanks, Mike  

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Re: browser back button/caching and php

Michael G wrote:

Quoted text here. Click to load it

Well, you can send caching directives, through PHP if you  
like, asking for the response to be kept out of caches, yes;  
but that's not the same as turning browser caching off.

As to 'Back' buttons, or history lists, here's HTTP/1.1's  
position (emphasis theirs):

| By default, an expiration time does not apply to history
| mechanisms.  If the entity is still in storage, a history
| mechanism SHOULD display it even if the entity has expired,
| unless the user has specifically configured the agent to
| refresh expired history documents.

And as to what happens with 'Back' buttons in practice, YMMV.


Re: browser back button/caching and php

Quoted text here. Click to load it

If you can get the PHP to run on the same machine as the browser it may be
possible to manipulate the config file :)

Manipulating the browser needs to be done using a language that the browser
can see like html or javascript.


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