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setExpires

This function can be used to set an absolute time for an expiration of a page. This is best used for pages with a long life that may be requested frequently. Due to problems in time synchronization between the client and the server, it is not totally reliable, especially for short-lived caches. The data must follow one of the acceptable HTTP date formats.

Refer to the W3 Protocols for more information:

http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3

Type and Usage

• "Global Functions"

• "Idoc Script"

Parameters

The only parameter is an absolute date, formatted in the manner HTTP requires, after which this page should be refreshed

Output

• Returns TRUE if the function is successful.

• Returns FALSE if the function fails.

Example

This will cause the page to expire at the given absolute time. Note that all time stamps must be in the GMT time zone.

<$setExpires("Sat, 02 Aug 2003 24:00:00 GMT")$> 

This is a way to use other IdocScript functions to set the expiration date to 14 days from the current date.

<$date=formatDateWithPattern(dateCurrent(14), "EEE, dd MMM yyyy")$>
<$setExpires(date & " 24:00:00 GMT"))$> >

See Also

• "setHttpHeader"