Please - How to test when a field is null ? ? ?

[honza1965]

I would like to use the PHP function is_null. But. I'm entering '#field_name#' or #field_name#
for example in PHP AfterSave:

Code: Select all

if (is_null ('#field_name#')) {
   echo "Field is null";
}

but it doesn't work . . . .

Thank you very much for the idea of NULL testing

[kev1n]

Object values are usually not null but blank when retrieved as a Hash Cookie. (even if they are null in the db)

Code: Select all

if ('#field_name#' == '') {
 
}

If you really want to check for null values, you need to retrieve the values from the db directly.

[honza1965]

Great! ! ! Thank you so much - everything is OK