The str_split function splits a string into an array.

    
    $string = "Hello World";
    $stringSplit = str_split($string);

    print_r($stringSplit);
    // Array ( [0] => H [1] => e [2] => l [3] => l [4] => o [5] =>  [6] => W [7] => o [8] => r [9] => l [10] => d )