I Having Array I Want To Values In It Separated By Commas

In php i believe you create arrays the following way:

$array = [
    "foo" => "bar",
    "bar" => "foo",
];

?>

So you would instead of typing:

$newtype = "LCD","LED","REFRIGERATOR";

Type this:

$newtype = array(
    "LCD",
    "LED",
    "REFRIGERATOR"
);

And the array should be accessible by doing for example:

$newtype[1];//Would give you the string "LED"