PHP - Ds Deque capacity() Function

Ds\Deque::capacity() function can return the current capacity.

Syntax

public int Ds\Deque::capacity( void )

Ds\Deque::capacity() function doesn't have any parameters and can return the current capacity.

Example 1

<?php 
   $deque = new \Ds\Deque(); 
   echo(" The default size of deque:"); 
   var_dump($deque->capacity()); 
   
   $deque->allocate(30);  
   echo("The allocated size of deque:"); 
   var_dump($deque->capacity()); 
?> 

Example 2

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5, 6]); 
   echo("The elements of deque:"); 
   var_dump($deque); 
   
   echo("\n The capacity of a deque:"); 
   var_dump($deque->capacity()); 
?>