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PHP | Ds\Collection isEmpty() Function

Last Updated : 21 Jan, 2019

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.

Below programs illustrate the Ds\Collection::isEmpty() function in PHP:

Example 1:

<?php 
  
// Create a collection 
$collection = new \Ds\Vector([10, 15, 21, 13, 16, 18]); 
  
// Use isEmpty function 
$res = $collection->isEmpty(); 
  
// Display the result 
var_dump($res); 
  
// Create a collection 
$collection = new \Ds\Vector(); 
  
// Use isEmpty function 
$res = $collection->isEmpty(); 
  
// Display the result 
var_dump($res); 
?> 

Output:

bool(false) 
bool(true)

Example 2:

<?php 
  
// Create a collection 
$collection = new \Ds\Vector(); 
  
// display output 
var_dump($collection->isEmpty()); 
  
// Create a collection 
$collection = new \Ds\Vector([1, 3, 5, 2, 6]); 
  
// Display output 
var_dump($collection->isEmpty()); 
  
?> 

Output:

bool(true) 
bool(false)

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

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vijay_raj

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