How do I check if array value is empty?

Question

Here is my array ouput

Array
(
    [1] => 1
    [2] => 2
    [3] =>  
)

How do I know the [3] => is empty?

Answer 1

$array = array('A', 'B', ''); 

or

$array = array('A', 'B', '  ');

An other solution:

this work for me

if(in_array(null, $myArray) || in_array('', array_map('trim',$myArray))) {
   echo 'Found a empty value in your array!';
   }