SplDoublyLinkedList::add
PHP function
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(PHP 5 >= 5.5.0, PHP 7, PHP 8)
Add/insert a new value at the specified index
Description
SplDoublyLinkedList::add(int $index, mixed $value): void
Insert the value value at the specified index, shuffling the previous value at that index (and all subsequent values) up through the list.
Parameters
indexThe index where the new value is to be inserted.
valueThe new value for the
index.
Return Values
Void
Errors/Exceptions
Throws OutOfRangeException when index is out of bounds or when index cannot be parsed as an integer.