Returns TRUE if the input value is NULL (not the same as 0).
input|null()
TRUE or FALSE.
This operator returns TRUE if the input value is NULL, otherwise FALSE will be returned. Please note that NULL is not the same as a numeric zero (0).
{if 0|null()}
The truth is out there.
{else}
The day the earth stood still.
{/if}The following output will be produced: "The day the earth stood still".
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