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A PHP Error was encountered

Severity: Notice

Message: Undefined index: userid

Filename: views/question.php

Line Number: 195

Backtrace:

File: /home/u125378470/domains/lawhelpguru.org/public_html/application/views/question.php
Line: 195
Function: _error_handler

File: /home/u125378470/domains/lawhelpguru.org/public_html/application/controllers/Questions.php
Line: 416
Function: view

File: /home/u125378470/domains/lawhelpguru.org/public_html/index.php
Line: 315
Function: require_once

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How do we control web page caching, across all browsers?

Our investigations have shown us that not all browsers respect the HTTP cache directives in a uniform manner.

For security reasons we do not want certain pages in our application to be cached, ever, by the web browser. This must work for at least the following browsers:

  • Internet Explorer 6+
  • Firefox 1.5+
  • Safari 3+
  • Opera 9+
  • Chrome

Our requirement came from a security test. After logging out from our website you could press the back button and view cached pages.