(PECL ds >= 1.0.0)
Ds\Stack::isEmpty — Returns whether the stack is empty
Returns whether the stack is empty.
This function has no parameters.
Returns true if the stack is empty, false otherwise.
Example #1 Ds\Stack::isEmpty() example
<?php
$a = new \Ds\Stack([1, 2, 3]);
$b = new \Ds\Stack();
var_dump($a->isEmpty());
var_dump($b->isEmpty());
?>
The above example will output something similar to:
bool(false) bool(true)