PHP - Ds Map allocate() Function

Ds\Map::allocate() function can allocate enough memory for the required capacity.

Syntax

public void Ds\Map::allocate( int $capacity )

Ds\Map::allocate() function doesn't return any value.

Example 1

<?php  
   $map = new \Ds\Map();  
   var_dump($map->capacity());  
  
   $map->allocate(50);  
   var_dump($map->capacity());  
    
   $map->allocate(100);  
   var_dump($map->capacity());  
?> 

Example 2

<?php  
   $map = new \Ds\Map();  
  
   $array = array(10, 20, 30, 40, 50);  
   foreach($array as $val) {  
      $map->allocate($val);  
      var_dump($map->capacity());  
   }
?>