Jim O’Halloran’s Weblog

Published October 29th, 2004 by Jim O'Halloran

Avoiding Page has Expired Messages

Chris Shifflet has started writing a new collumn for PHP Magazine called “Guru Speaks”. In his first column he ovvers some excellent advice on avoiding Page has Expired messages.

The warning is a result of the user utilizing the browser’s history mechanism to access a previously viewed page, usually by clicking the back button or refreshing. One cause of the warning is that the page has expired from the browser’s cache, so it wants to inform the user that it must request the page again, just in case this is not something the user wants.

Chris also wrote the SSL tutorial that I’ve linked to before. He’s one of those writers who seem to be able to take a complex topic and explain it easily. Well worth the read.

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