src/QCheck/Generator.php
public static function alphaNumChars()
    {
        return self::oneOf(
            self::choose(48, 57),
            self::choose(65, 90),
            self::choose(97, 122)
        )->fmap('chr');
    }
public static function alphaNumChars()
    {
        return self::oneOf(
            self::choose(48, 57),
            self::choose(65, 90),
            self::choose(97, 122)
        )->fmap('chr');
    }
public static function alphaNumChars ( ) { return self :: oneOf ( self :: choose ( 48 , 57 ) , self :: choose ( 65 , 90 ) , self :: choose ( 97 , 122 ) ) -> fmap ( 'chr' ) ; }
creates a generator that produces alphanumeric characters

@return Generator
creates a generator that produces alphanumeric characters