If you use errorCheck float then you get the error: Fatal error: Cannot use 'Float' as class name as it is reserved in /html/typo3/typo3conf/ext/formhandler/Classes/Validator/ErrorCheck/Float.php on line 20
You have to rename Float.php into f.e. Phpfloat.php
Then rename the class in this file the same way.
And then you can use phpfloat as errorCheck.
If you use errorCheck float then you get the error: Fatal error: Cannot use 'Float' as class name as it is reserved in /html/typo3/typo3conf/ext/formhandler/Classes/Validator/ErrorCheck/Float.php on line 20
You have to rename Float.php into f.e. Phpfloat.php Then rename the class in this file the same way. And then you can use phpfloat as errorCheck.