[Typo3-shop] fatal error on basket view

[Stefan Beylen]

Hello List,

am experimenting a bit with the new tt_products on a testsite and when I 
insert the "BASKET" on my page I get:

Fatal error: Call to undefined function: floatval() in 
mywebdir/typo3conf/ext/tt_products/pi/class.tx_ttproducts.php on line 2057

the page where this occurs got a loginform as described in the tut, not 
in BORDER though as I use TV - is that the problem maybe?

T3.8 - tt_products 2.0.5 - PHP4 - Templavoila 0.4.0

thx for help