isAlphabetic

Determine if the string is composed of alphabetic characters.

Twine\Str::isAlphabetic() : bool

Examples

$string = new Twine\Str('JohnPinkerton');

        $string->isAlphabetic(); // Returns true
$string = new Twine\Str('john pinkerton');

        $string->isAlphabetic(); // Returns false