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.
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:
Ds\Stack Object (  => GfG  => to  => Welcome ) Ds\Stack Object ( )
Ds\Stack Object (  => 5.5  => 10  => GfG  => to  => Welcome ) Ds\Stack Object ( )