Ds\Stack::isEmpty
(PECL ds >= 1.0.0)
Ds\Stack::isEmpty — Returns whether the stack is empty
Description
public Ds\Stack::isEmpty ( ) : bool
Returns whether the stack is empty.
Parameters
This function has no parameters.
Return Values
Returns true if the stack is empty, false otherwise.
Examples
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)
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https://www.php.net/manual/en/ds-stack.isempty.php