PHP | Ds\Vector set() Function

The Ds\Vector::set() function is an inbuilt function in PHP which is used to set the value in the vector at the given index.

Syntax:

void public Ds\Vector::set( $index, $value )

Parameters: This function accepts two parameters as mentioned above and described below:

• $index: This parameter holds the index value at which the vector value to be updated.
• $value: This parameter holds the value by which previous element is to be replaced.

Return Value: This function does not return any value.

Exception: This function throws OutOfRangeException if index is invalid.

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

Program 1:

<?php

// Create new Vector
$vect = new \Ds\Vector([1, 2, 3, 4, 5]);

// Display the Vector elements
print_r($vect);

// Use set() function to set the
// element in the vector
$vect->set(1, 10);

echo("\nVector after updating the element\n");

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

?>

Output:

Ds\Vector Object
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

Vector after updating the element
Ds\Vector Object
(
    [0] => 1
    [1] => 10
    [2] => 3
    [3] => 4
    [4] => 5
)

Program 2:

<?php

// Create new Vector
$vect = new \Ds\Vector(["geeks", "of", "geeks"]);

// Display the Vector elements
print_r($vect);

// Use set() function to set the
// element in the vector
$vect->set(1, "for");

echo("\nVector after updating the element\n");

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

?>

Output:

Ds\Vector Object
(
    [0] => geeks
    [1] => of
    [2] => geeks
)

Vector after updating the element
Ds\Vector Object
(
    [0] => geeks
    [1] => for
    [2] => geeks
)

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