Stringy\Stringy::isAlphanumeric PHP Метод

Returns true if the string contains only alphabetic and numeric chars, false otherwise.

public isAlphanumeric ( ) : boolean
Результат	boolean	Whether or not $str contains only alphanumeric chars

    public function isAlphanumeric()
    {
        return $this->matchesPattern('^[[:alnum:]]*$');
    }