How to convert a string to an array in PHP?

To convert a string to an array in PHP, you can use the str_split() function. This function splits a string into an array of characters. Here's an example:

$str = "Hello, World!";
$array = str_split($str);
print_r($array);

Output:

Array
(
    [0] => H
    [1] => e
    [2] => l
    [3] => l
    [4] => o
    [5] => ,
    [6] =>
    [7] => W
    [8] => o
    [9] => r
    [10] => l
    [11] => d
    [12] => !
)

In this example, the str_split() function splits the string $str into an array of characters, and then it is printed using print_r() to show the array elements.