PHP | Ds\Deque clear() Function
The Ds\Deque::clear() function is an inbuilt function in PHP which is used to clear the Deque by removing all elements from the Deque.
Syntax:
public Ds\Deque::clear( void ) : void
Parameters: This function does not accepts any parameter.
Return Value: This function does not return any Value.
Below programs illustrate the Ds\Deque::clear() function in PHP:
Program 1:
<?php // Declare deque of default size$deck = new \Ds\Deque([1, 2, 3, 4, 5, 6]); echo("Elements in the deck:\n"); // Display the Deque elementsprint_r($deck); // Use clear() function to clear the deque$deck->clear(); // Display the dequeprint_r($deck); ?> |
Output:
Elements in the deck:
Ds\Deque Object
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
)
Ds\Deque Object
(
)
Program 2:
<?php // Declare deque of default size$deck = new \Ds\Deque(["geeks", "for", "geeks"]); echo("Elements in the Deque\n"); // Display the Deque elementsprint_r($deck); // Use clear() function to clear the deque$deck->clear(); echo("Alter clearing the elements\n");// Display the dequeprint_r($deck); ?> |
Output:
Elements in the Deque
Ds\Deque Object
(
[0] => geeks
[1] => for
[2] => geeks
)
Alter clearing the elements
Ds\Deque Object
(
)
Reference: http://php.net/manual/en/ds-deque.clear.php
