PHP | Ds\Deque count() Function

The Ds\Deque::count() function is an inbuilt function in PHP which is used to get the number of elements in the Deque. Syntax:

public Ds\Deque::count( void ) : int

Parameters: This function does not accept any parameter. Return Value: This function returns the number of elements in the Deque. Below programs illustrate the Ds\Deque::count() function in PHP: Program 1: PHP

<?php

// Declare a deque
$deck = new \Ds\Deque([1, 2, 3, 4, 5, 6]);

echo("Elements in the Deque\n");

// Display the Deque elements
print_r($deck);

echo("\nNumber of elements in the Deque: ");

print_r($deck->count());

?>

Program 2: PHP

<?php

// Declare a deque
$deck = new \Ds\Deque(["geeks", "for", "geeks"]);

echo("Elements in the Deque\n");

// Display the Deque elements
print_r($deck);

echo("\nNumber of elements in the Deque: ");

print_r($deck->count());

?>

Reference: http://php.net/manual/en/ds-deque.count.php