str_split < PHP
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 )