PHP Ds\Set isEmpty() Function
Last Updated :
11 Jul, 2025
Improve
The Ds\Set::isEmpty() function of Ds\Set class in PHP is an inbuilt function which is used to check whether a set is empty or not. If the Set instance is empty then this function returns true otherwise it returns False.
Syntax:
php
php
bool public Ds\Set::isEmpty ( void )Parameters: This function does not accepts any parameters. Return Value: This function returns a boolean value depending on whether the Set is empty or not. If the Set instance is empty then this function returns true otherwise it returns False. Below programs illustrate the Ds\Set::isEmpty() function: Program 1:
<?php
// Declare new Set
$set = new \Ds\Set();
// Display the Set element
var_dump($set);
// Check if set is empty
if($set->isEmpty())
echo "Set is Empty";
?>
Output:
Program 2:
object(Ds\Set)#1 (0) {
}
Set is Empty
<?php
// Declare new Set
$set = new \Ds\Set(["Geeks", "for", "Keegs"]);
// Display the Set element
var_dump($set);
// Check if Set is Empty
if($set->isEmpty()==0)
echo "Set is Not Empty";
?>
Output:
Reference: https://www.php.net/manual/en/ds-set.isempty.php
object(Ds\Set)#1 (3) {
[0]=>
string(5) "Geeks"
[1]=>
string(3) "for"
[2]=>
string(5) "Keegs"
}
Set is Not Empty
Article Tags :
