PHP Ds\Set isEmpty() Function

PHP | Ds\Map isEmpty() Function

Last Updated : 20 Aug, 2019

The Ds\Map::isEmpty() function in PHP is used to check whether a given Map is empty or not. A Map is empty to be empty if does not contain any key-value pair. Syntax:

Ds\Map public Ds\Map::isEmpty ( void )

Parameter: It does not accepts any parameter. Return value: This function returns a boolean value, True or False based on whether the Map object is Empty or not. Below program illustrate the Ds\Map::isEmpty() function in PHP: Program 1:

php

<?php
// PHP program to illustrate the isEmpty()
// function of Ds\map

// Creating a Map
$map = new \Ds\Map(["1" => "Geeks", 
            "2" => "for", "3" => "Geeks"]);

// Check if the Map is empty or not
var_dump($map->isEmpty());

?>

Output:

bool(false)

Program 2:

php

<?php
// PHP program to illustrate the isEmpty()
// function of Ds\map

// Creating a Map
$map = new \Ds\Map();

// Check if the Map is empty or not
var_dump($map->isEmpty());

?>

Output:

bool(true)

Reference: http://php.net/manual/en/ds-map.isempty.php

PHP Ds\Set isEmpty() Function

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