Syntax:int SplDoublyLinkedList::count (void)
Parameters:does not contain any parameters.
Returned value:returns the number of elements present in a doubly linked list.The programs below illustrate the
function SplDoublyLinkedList::count ( )in PHP:
Program 1:
// Declare an empty SplDoublyLinkedList
$list
=
new
SplDoublyLinkedList;
// Use the SplDoublyLinkedList::add() function for
// add elements to SplDoublyLinkedList
$list
-> add (0, 30);
$list
-> add (1, 20);
$list
-> add (2, 30);
$list
-> add (3,
" Geeks "
);
$list
-> add (4,
’ G’
);
// Use the SplDoublyLinkedList::count() function
// return the number of elements
print_r (
$list
->
count
());
?>
Exit:5
Program 2:
// Declare an empty SplDoublyLinkedList
$list
=
new
SplDoublyLinkedList;
// Use the SplDoublyLinkedList::push() function for
// add elements to SplDoublyLinkedList
$list
-> push (1);
$list
-> push (2);
$list
-> push (3);
$list
-> push (8);
$list
-> push (5);
// Use the SplDoublyLinkedList::count() function
// return the number of elements
print_r (
$list
->
count
());
?>
Exit:5
Link: https://www.php.net/manual/ en / spldoublylinkedlist.count.php