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

There is even better/shorter/simpler solution. Compilation of already given answers. For initial data

[1, 4, "0", "V", null, false, true, 'true', "N"]

with

$result = array_map('strval', $arr);

$result will be

['1', '4', '0', 'V', '', '', '1', 'true', 'N']

This should work even in php4 :)