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
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