<?php
$arr = Array (' 0 ' = = ', ' 1 ' = ' 0 ', ' 2 ' =>null, ' 3 ' =>null, ' 4 ' = ' null ', ' 5 ' =>false, ' 6 ' = ' false ', ' 7 ' = > ' true ', ' 8 ' =>true, ' 9 ' =>0);
echo "Empty ("): ". Empty ($arr [' 0 ']). ' <br/> ';//true
echo "Empty (' 0 '):". Empty ($arr [' 1 ']). ' <br/> ';//true
echo "Empty (NULL):". Empty ($arr [' 2 ']). ' <br/> '; True
echo "Empty (NULL):". Empty ($arr [' 3 ']). ' <br/> ';//true
echo "Empty (' NULL '):". Empty ($arr [' 4 ']). ' <br/> ';//faslee
echo "Empty (false):". Empty ($arr [' 5 ']). ' <br/> '; True
echo "Empty (' false '):". Empty ($arr [' 6 ']). ' <br/> ';//false
echo "Empty (' true '):". Empty ($arr [' 7 ']). ' <br/> '; False
echo "Empty (True):". Empty ($arr [' 8 ']). ' <br/> ';//false
echo "Empty (0):". Empty ($arr [' 9 ']). ' <br/> ';//true
$t;
echo "Empty ():". Empty ($t). ' <br/> '; True
$a = array ();
Echo ' Empty (Array ()): '. Empty ($a). ' <br/> ';//true
Echo ' echo "Isset ():". Isset ($t). ' <br/> ';//false
echo "Isset ('):". Isset ($arr [' 0 ']). ' <br/> ';//true
echo "Isset (' 0 '):". Isset ($arr [' 1 ']). ' <br/> ';//true
echo "Isset (NULL):". Isset ($arr [' 2 ']). ' <br/> '; False
echo "Isset (NULL):". Isset ($arr [' 3 ']). ' <br/> '; False
echo "Isset (' NULL '):". Isset ($arr [' 4 ']). ' <br/> ';//true
echo "Isset (False):". Isset ($arr [' 5 ']). ' <br/> '; True
echo "Isset (' false '):". Isset ($arr [' 6 ']). ' <br/> ';//true
echo "Isset (' true '):". Isset ($arr [' 7 ']). ' <br/> '; True
echo "Isset (True):". Isset ($arr [' 8 ']). ' <br/> '; True
echo "Isset (0):". Isset ($arr [' 9 ']). ' <br/> ';//true
P ($arr);
function P ($data) {
echo "<pre>";
Print_r ($data);
echo "<pre/>";
}
?>
Empty () and isset ()