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 accept any parameters.
Return Value: This function does not return any value.
Below programs illustrate the Ds\Stack::clear() function:
Program 1:
PHP
<?php// PHP program to illustrate the // Ds\stack::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 stackprint_r($stack);// clear the stack$stack->clear();// Print the stack againprint_r($stack);?> |
Output:
Ds\Stack Object
(
[0] => GfG
[1] => to
[2] => Welcome
)
Ds\Stack Object
(
)
Program 2:
PHP
<?php// PHP program to illustrate the // Ds\stack::clear() function // Create a Stack instance$stack = new \Ds\Stack();// Pushing Mixed value elements to Stack$stack->push("Welcome");$stack->push("to");$stack->push("GfG");$stack->push(10);$stack->push(5.5);// Print the stackprint_r($stack);// clear the stack$stack->clear();// Print the stack againprint_r($stack);?> |
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
