How to remove the empty values of an array without removing the keys and also without resetting the keys

Question

How to remove the empty values of an array without removing the keys and also without resetting the keys.

 Eg:
    [0]= "test1"
    [1]= ""
    [2]= "test2"

Doing array_filter results in the following output:

    [0]= "test1"
    [2]= "test2"

Here the key is also removed. Is there a way to remove only the values without removing the keys to get an output like :

    [0]= "test1"
    [1]= "test2"

Is there any php function that does it?

Answer 1

You can use array_values to get all the values from the array and indexes the array numerically.

$arr = array("test1","","test2");

$result = array_values( array_filter( $arr ) );

echo "<pre>";
print_r( $result );
echo "</pre>";

This will result to:

Array
(
    [0] => test1
    [1] => test2
)