PHP | Ds\Stack clear() Function

The Ds\Stack::clear() function of PHP is used to remove all elements from a Stack and clear it. This function simply removes all of the elements from the Stack but not completely deletes it. It just empties it.

Syntax:

void public Ds\Stack::clear ( void )

Parameters: This function does not accepts any parameters.



Return Value: This function does not returns any value.

Below programs illustrate the Ds\Stack::clear() function:

Program 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

<?php
  
// PHP program to illustarte the 
// clear() function 
  
// Create a Stack instance
$stack = new \Ds\Stack();
  
// Pushing elements to Stack
$stack->push("Welcome");
$stack->push("to");
$stack->push("GfG");
  
// Print the stack
print_r($stack);
  
// clear the stack
$stack->clear();
  
// Print the stack again
print_r($stack);
  
?>

chevron_right


Output:

Ds\Stack Object
(
    [0] => GfG
    [1] => to
    [2] => Welcome
)

Ds\Stack Object
(

)

Program 2::

filter_none

edit
close

play_arrow

link
brightness_4
code

<?php
  
// PHP program to illustarte the 
// clear() function 
  
// Create a Stack instance
$stack = new \Ds\Stack();
  
// Pushing Mixed value elements to Stack
$stack->push("Welcome");
$stack->push("to");
$stack->push("GfG");
$stack->push(10);
$stack->push(5.5);
  
// Print the stack
print_r($stack);
  
// clear the stack
$stack->clear();
  
// Print the stack again
print_r($stack);
  
?>

chevron_right


Output:

Ds\Stack Object
(
    [0] => 5.5
    [1] => 10
    [2] => GfG
    [3] => to
    [4] => Welcome
)

Ds\Stack Object
(

)

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



My Personal Notes arrow_drop_up

The function of education is to teach one to think intensively and to think critically

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.