PHP | Ds\Stack count() Function

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

Syntax:

int Ds\Stack::count( void )

Parameters: This function does not accept any parameter.

Return Value: This function returns the number of elements present in the Stack.

Below programs illustrate the Ds\Stack::count() function in PHP:

Program 1:

<?php  
  
// Declare new stack  
$stack = new \Ds\Stack([10, 15, 21]);  
  
// Display the stack element  
var_dump($stack);  
  
// Count number of elements  
// present in the stack  
echo "Number of elements present in the stack: ";  
print_r($stack->count());  
  
?>  

Output:

object(Ds\Stack)#1 (3) {
  [0]=>
  int(21)
  [1]=>
  int(15)
  [2]=>
  int(10)
}
Number of elements present in the stack: 3

Program 2:

<?php  
  
// Declare new stack  
$stack = new \Ds\Stack(["Geeks", "for", "Keegs"]);  
  
// Display the stack element  
print_r($stack);  
  
// Display count of elements  
// present in the stack  
echo "Number of elements present in the stack: ";  
var_dump($stack->count());  
  
?>  

Output:

Ds\Stack Object
(
    [0] => Keegs
    [1] => for
    [2] => Geeks
)
Number of elements present in the stack: int(3)

Reference: https://www.php.net/manual/en/ds-stack.count.php

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