PHP | Ds\Vector clear() Function

The Ds\Vector::clear() function is an inbuilt function in PHP which is used to clear the vector elements by removing all the elements from the vector.

Syntax:

void public Ds\Vector::clear( void )

Parameters: This function does not accept any parameter.

Return Value: This function does not return any value.

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

Program 1:

<?php

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

echo ("Original Vector\n");

// Display vector elements
print_r($vector);

echo("Modified Vector\n");

// Use clear() function to
// remove vector elements
$vector->clear();

// Display vector elements
print_r($vector);

?>

Output:

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

Program 2:

<?php

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

echo ("Original Vector\n");

// Display vector elements
print_r($vector);

echo("Modified Vector\n");

// Use clear() function to
// remove vector elements
$vector->clear();

// Display vector elements
print_r($vector);

?>

Output:

Original Vector
Ds\Vector Object
(
    [0] => geeks
    [1] => for
    [2] => geeks
)
Modified Vector
Ds\Vector Object
(
)

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