[TYPO3-dev] more than 10 checkboxes in $TCA?

[Martin Kutschker]

Stefan Beylen schrieb:
> hi list!
> 
> http://typo3.org/documentation/document-library/core-documentation/doc_core_api/4.0.0/view/4/2/#id2814416 
> 
> 
> says:
> 
> items
> Notice: You can have a maximum of 10 checkboxes in such an array and 
> each element is represented by a single bit in the integer value which 
> ultimately goes into the database.
> 
> I need more though (15-20), and it seems not to be a problem to insert 
> more manually... what problems do I have to expect (except long integers 
> in the database)

You machine (and PHP) must use (unsigned) integers with enough bytes to 
store your flags. With a 32-bit/4-byte integer you should be able to 
hold 30 checkboxes savely. This takes a sign bit into account and has a 
spare bit, which I have heard, may be impose a problem on some 
architectures (which?).

I don't know if the Core has any real restriction on the number of 
checboxes. But 20 checkboxes are not a real beauty ;-)

Masi