The Ds\Queue::count() Function in PHP is used to get the count of elements present in a Queue instance.
Syntax:
int public Ds\Queue::count ( void )
Parameters: This function does not accepts any parameters.
Return Value: This function calculates the number of elements present in a Queue instance and returns the count.
Below programs illustrate the Ds\Queue::count() Function in PHP:
Program 1:
<?php   // Declare new Queue   $q = new \Ds\Queue();   // Add elements to the Queue $q->push("One"); $q->push("Two"); $q->push("Three");   // Count the number of elements // in this Queue print_r($q->count());   ?> |
Output:
3
Program 2:
<?php   // Declare new Queue $q = new \Ds\Queue();   // Add elements to the Queue $q->push("Geeks"); $q->push("for"); $q->push("Geeks");   // Count the number of elements // in this Queue print_r($q->count());   ?> |
Output:
3
Reference: http://php.net/manual/en/ds-priorityqueue.count.php
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