PHP SplQueue::dequeue() Function

PHP Ds\PriorityQueue capacity() Function

Last Updated : 23 Aug, 2019

The Ds\PriorityQueue::capacity() Function in PHP is used to check the current capacity of a PriorityQueue instance. Syntax:

int public Ds\PriorityQueue::capacity ( void )

Parameters: This function does not accepts any parameters. Return Value: This function returns the current capacity of the PriorityQueue instance. Below programs illustrate the Ds\PriorityQueue::capacity() Function in PHP: Program 1:

php

<?php 

// Declare new PriorityQueue 
$pq = new \Ds\PriorityQueue(); 

// Use capacity() function 
// to check the current capacity
var_dump($pq->capacity()); 

?>

Output:

int(8)

Program 2:

php

<?php 

// Declare new PriorityQueue 
$pq = new \Ds\PriorityQueue(); 

echo("Current Capacity is: "); 

// Use capacity() function 
// to check the current capacity
var_dump($pq->capacity()); 

echo("Current Capacity is: "); 

// Use allocate() function to 
// allocate capacity 
$pq->allocate(5); 

// Display the allocated vector 
// capacity 
var_dump($pq->capacity()); 

// Use allocate() function to 
// allocate capacity 
$pq->allocate(120); 

// Display the allocated vector 
// capacity 
var_dump($pq->capacity()); 

?>

Output:

Current Capacity is: int(8)
Current Capacity is: int(8)
int(128)

Reference: http://php.net/manual/en/ds-priorityqueue.capacity.php

PHP SplQueue::dequeue() Function

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