The Ds\Map::allocate() function is an inbuilt function in PHP which is used to allocate enough memory for required capacity.
Syntax:
void public Ds\Map::allocate( $capacity )
Parameters: This function accepts single parameter $capacity which indicate number of capacity allocated.
Return Value: This function does not return any values.
Below programs illustrate the Ds\Map::allocate() function in PHP:
Program 1:
<?php // Create new map $map = new \Ds\Map();
// Use capacity() function to // display the capacity of map var_dump( $map ->capacity());
// Allocate capacity $map ->allocate(50);
// Display capacity var_dump( $map ->capacity());
// Allocate capacity $map ->allocate(80);
// Display capacity var_dump( $map ->capacity());
?> |
Output:
int(8) int(64) int(128)
Program 2:
<?php // Create new map $map = new \Ds\Map();
// Declare capacity array $arr = array (10, 20, 30, 40);
// Loop run for every array element foreach ( $arr as $val ) {
// Allocate capacity
$map ->allocate( $val );
// Display capacity of map
var_dump( $map ->capacity());
} ?> |
Output:
int(16) int(32) int(32) int(64)
Reference: https://www.php.net/manual/en/ds-map.allocate.php