bool value of blank string inp php

1
2<?php
3/**
4* @author :  Nanhe Kumar <nanhe.kumar@gmail.com>
5* List of all empty values
6**/
7
8$testCase = array(
9    1 => '',
10    2 => "",
11    3 => null,
12    4 => array(),
13    5 => FALSE,
14    6 => NULL,
15    7=>'0',
16    8=>0,
17    
18);
19
20foreach ($testCase as $k => $v) {
21    if (empty($v)) {
22        echo "<br> $k=>$v is empty";
23    }
24}
25/**
26Output
271=> is empty
282=> is empty
293=> is empty
304=>Array is empty
315=> is empty
326=> is empty
337=>0 is empty
348=>0 is empty
35**/
36?>
37
38