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 can be solved in one line using:

array_walk($array_json_return,function(&$item){$item=strval($item);});

here $array_json_return is the array.

Answer 2

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 :)

Answer 3

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);

Answer 4

You can use this instead.

array_map(function($val){return is_null($val)? "" : $val;},$result);

Answer 5

Then you should just loop through array elements, check each value for null and replace it with empty string. Something like that:

foreach ($array as $key => $value) {
    if (is_null($value)) {
         $array[$key] = "";
    }
}

Also, you can implement checking function and use array_map() function.

Answer 6

foreach($array as $key=>$value)
{
if($value===NULL)
{
$array[$key]="";
}
}