$array = explode(' ', $string);
$array = str_split($string);
print_r(explode(',',$yourstring));
parse_str(unserialize($string_type_array), $array);
var_dump($array);
<?php
$realArray = (array) $stdClass;
?>
$str = "Hello world. It's a beautiful day.";
print_r (explode(" ",$str));
explode()