[TYPO3-english] SYS_LASTCHANGED vs. tstamp
v-tyok at mail.ru
Fri Nov 18 12:27:03 CET 2011
> So what is the difference between SYS_LASTCHANGED and tstamp. When will
> those fields update?
I also was interesting in this and found a method in class.tslib_content.php
called: function lastChanged($tstamp).
Here are lines from it's description:
* Sets the SYS_LASTCHANGED timestamp if input timestamp is larger than
* The SYS_LASTCHANGED timestamp can be used by various caching/indexing
applications to determine if the page has new content.
* Therefore you should call this function with the last-changed timestamp of
any element you display.
So, as you see, SYS_LASTCHANGED is used for caching/indexing and should be
changed by extensions (however, I've never seen, that people are using
it...), and tstamp, I guess, should be changed by core, when you, f.e.,
change page properties or make some changes of content on a page.
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