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How to disable browser back button and refresh button

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How to disable browser back button and refresh button

alekhya naga

12yAsked Aug 27, 2014, 3:34 AM1.3kPHP

Hi,

How to disable browser back button and refresh button when the exam is started? can you please provide me the solution for this!!!

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Dipankar Biswas12y ago
You can't disable Back button with PHP. You can disable caching using something like this:

header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // DATE in the past
?>

This will add the appropriate headers to the HTTP request to inform the browser it should reload the page instead of fetching it through a cache.
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