PHP | Ds\Vector count() Function

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

Syntax:

int public Ds\Vector::count( void )

Parameters: This function does not accepts any parameter.

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

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

Program 1:

<?php

// Declare a vector
$arr1 = new \Ds\Vector([1, 2, 3, 4, 5, 6, 7, 8]);

echo("Vector elements\n");

// Display the vector elements
print_r($arr1);

echo("Count vector elements: ");

// Use count() function to count
// elements in the vector
echo(count($arr1));

?>

Output:

Vector elements
Ds\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
)
Count vector elements: 8

Program 2:

<?php

// Declare a vector
$arr1 = new \Ds\Vector(["geeks", "for", "geeks"]);

echo("Vector elements\n");

// Display the vector elements
print_r($arr1);

echo("Count vector elements: ");

// Use count() function to count
// elements in the vector
echo(count($arr1));

?>

Output:

Vector elements
Ds\Vector Object
(
    [0] => geeks
    [1] => for
    [2] => geeks
)
Count vector elements: 3

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