(PECL ds >= 1.0.0)
Ds\PriorityQueue::isEmpty — Returns whether the queue is empty
Returns whether the queue is empty.
This function has no parameters.
Returns TRUE if the queue is empty, FALSE otherwise.
Example #1 Ds\PriorityQueue::isEmpty() example
<?php
$a = new \Ds\PriorityQueue();
$b = new \Ds\PriorityQueue();
$a->push("a", 5);
$a->push("b", 15);
$a->push("c", 10);
var_dump($a->isEmpty());
var_dump($b->isEmpty());
?>
The above example will output something similar to:
bool(false) bool(true)