How to convert the null values to empty string in php array?

Question

I want to convert this array that Array[4] should not give null it can give blank space (empty string).

Array (
    [0] => 1
    [1] => 4
    [2] =>         


        

Answer 1

This will map the array to a new array that utilizes the null ternary operator to either include an original value of the array, or an empty string if that value is null.

$array = array_map(function($v){
    return $v ?: '';
},$array);