If you have a number field which has a range of 0-999999999
and ‘required’ => true
like so:

‘type’ => ‘number’,
‘field’ => zzz,
‘label’ => xxxx,
‘description’ => yyyy,
‘required’ => true,
‘attributes’ => array(
‘min’ => 0
,’max’ => 999999999
)

you would think that 0 will pass the required if statement!
but it won’t:
in “class-piklist-validate.php” line 656 it says
“if (empty($required))”
0 is also empty so you will get this validation error no matter what
i changed it to “if (empty($required) && !is_numeric($required) )”
and it does what i want it