PHP | Ds\Set capacity() Function

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The Ds\Set::capacity() function is an inbuilt function in PHP which is used to return the capacity of the set.

Syntax:

int public Ds\Set::capacity( void )

Parameter: This function does not accepts any parameter.

Return value: This function returns the current capacity of set.

Below programs illustrate the Ds\Set::capacity() function in PHP:

Program 1:

<?php  
  
// Declare an empty set  
$set = new \Ds\Set(); 
  
echo("Default size of Set: ");  
  
// Display the current capacity 
var_dump($set->capacity());  
  
// Allocating space for 50 values 
$set->allocate(50);  
  
echo("Allocated size of Set: ");  
  
// Display the current capacity 
var_dump($set->capacity());  
  
?>  

Output:

Default size of Set: int(8)
Allocated size of Set: int(64)

Program 2:

<?php  
  
// Declare a set 
$set = new \Ds\Set([1, 2, 3, 4, 5, 6]);  
  
echo("Elements of Set\n");  
  
// Display the Set elements  
var_dump($set);  
  
echo("\nCapacity of Set: ");  
  
// Display the capacity of Set  
var_dump($set->capacity());  
  
?>  

Output:

Elements of Set
object(Ds\Set)#1 (6) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
  [3]=>
  int(4)
  [4]=>
  int(5)
  [5]=>
  int(6)
}

Capacity of Set: int(8)

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