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popElement(array) Removes and returns the last element of a list. |
Function: popElement
Removes and returns the last element of a list. Returns null if performed on an empty list.
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| Argument | Type | Description |
|---|---|---|
| array | Array | List of values |
Examples
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$aList = [ 1, 2 ],
popElement($aList)
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The new value of $alist is [ 1 ] (a list containing a single member, the integer 1)
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$aList = [ 1, 2 ],
$lastElement = popElement($aList) |
$lastElement now has the integer value 2 (not in a list) and, as before, the new value of $alist is [ 1 ]
popElement([2,0,1])
popElement() returns the value 1 and removes this element from the list, leaving [2,0]. Since the list [ 2,0,1 ] was never assigned to a variable, this operation simply returns the value 1 ad has no other effects.
$discountFilter = ifNull($discountFilterId, _NULL, popElement($discountFilters)
popElement() returns the discount filter from the end of the list of filters, then removes this filter from the list.