Empty
This function provides a conditional evaluation of an expression. If the expression evaluates as null or empty, the function will output true, otherwise it will output false.
Argument
Empty(1)
| Ordinal | Type | Required | Description |
|---|---|---|---|
| 1 | String | True | An attribute, variable or nested function to evaluate |
Example
The following example evaluates the MemberId attribute. If the attribute field is empty, then the function will evaluate to true.
%%[
var @memberId, @nonMember
set @memberId = MemberId
if empty(@memberId) then
set @displayMemberId = "You are not a member"
else
set @displayMemberId = Concat("Your member id is ",@memberId)
endif
]%%
<p>%%=v(@displayMemberId)=%%.</p>Output
For records without a MemberId attribute value, the following string will be displayed.
<p>You are not a member</p>