PHP | DsCollection isEmpty() Function

PHP | Ds\Vector isEmpty() Function

Last Updated : 22 Aug, 2019

The Ds\Vector::isEmpty() function is an inbuilt function in PHP which is used to check the vector is empty or not. Syntax:

bool public Ds\Vector::isEmpty( void )

Parameters: This function does not accept any parameter. Return Value: This function returns true if the vector is empty, false otherwise. Below programs illustrate the Ds\Vector::isEmpty() function in PHP: Program 1:

PHP

<?php

// Create new vector
$vector = new \Ds\Vector([1, 2, 4, 5]);

// Use isEmpty() function to
// check vector
var_dump($vector->isEmpty());

// Use clear() function to remove
// vector elements
$vector->clear();

// Use isEmpty() function
var_dump($vector->isEmpty());

?>

Output:

bool(false)
bool(true)

Program 2:

PHP

<?php

// Create new vector
$vector = new \Ds\Vector(["geeks", "for", "geeks"]);

// Use isEmpty() function to
// check vector
var_dump($vector->isEmpty());

// Use clear() function to remove
// vector elements
$vector->clear();

// Use isEmpty() function
var_dump($vector->isEmpty());

?>

Output:

bool(false)
bool(true)

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

PHP | DsCollection isEmpty() Function

B

barykrg

Improve

Article Tags :

Similar Reads

PHP DsSet isEmpty() Function

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: bool public Ds\Set::isEmpty ( void ) Parameters: This function does not

PHP | DsDeque isEmpty() Function

The Ds\Deque::isEmpty() function is an inbuilt function in PHP which is used to check the Deque is empty or not. Syntax: public Ds\Deque::isEmpty( void ) : bool Parameters: This function does not accept any parameter. Return Value: This function returns true if the Deque is empty, else return false.

PHP | DsStack isEmpty() Function

The Ds\Stack::isEmpty() function of PHP Ds\Stack class is used to check whether a Stack is empty or not. This method returns a boolean value, True if the Stack is empty otherwise it returns False. Syntax: bool public Ds\Stack::isEmpty ( void ) Parameter: This function does not accept any parameters.

PHP DsQueue isEmpty() Function

The Ds\Queue::isEmpty() Function in PHP is used to whether a particular Queue instance is empty or not. It returns True if the Queue is empty otherwise it returns False. Syntax: bool public Ds\Queue::isEmpty ( void ) Parameters: This function does not accepts any parameters. Return Value: This funct

PHP | DsVector isEmpty() Function

The Ds\Vector::isEmpty() function is an inbuilt function in PHP which is used to check the vector is empty or not. Syntax: bool public Ds\Vector::isEmpty( void ) Parameters: This function does not accept any parameter. Return Value: This function returns true if the vector is empty, false otherwise.

PHP | DsCollection isEmpty() Function

The Ds\Collection::isEmpty() function is an inbuilt function in PHP which is used to returns whether collection is empty. Syntax: Ds\Collection::isEmpty ( void ) : bool Parameters: This function does not accepts any parameters. Return Value: It returns True if collection is empty or False otherwise.