Midday(); // true
     * Carbon::parse('2019-02-28 12:00:01')->isMidday(); // false
     * ```
     *
     * @return bool
     */
    public function isMidday()
    {
        /* @var CarbonInterface $this */
        return $this->rawFormat('G:i:s') === static::$midDayAt.':00:00';
    }

    /**
     * Checks if the (date)time string is in a given format.
     *
     * @example
     * ```
     * Carbon::hasFormat('11:12:45', 'h:i:s'); // true
     * Carbon::hasFormat('13:12:45', 'h:i:s'); // false
     * ```
     *
     * @SuppressWarnings(PHPMD.EmptyCatchBlock)
     *
     * @param string $date
     * @param string $format
     *
     * @return bool
     */
    public static function hasFormat($date, $format)
    {
        try {
            // Try to create a DateTime object. Throws an InvalidArgumentException if the provided time string
            // doesn't match the format in any way.
            static::rawCreateFromFormat($format, $date);

            // createFromFormat() is known to handle edge cases silently.
            // E.g. "1975-5-1" (Y-n-j) will still be parsed correctly when "Y-m-d" is supplied as the format.
            // To ensure we're really testing against our desired format, perform an additional regex validation.

            // Preg quote, but remove escaped backslashes since we'll deal with escaped characters in the format string.
            $quotedFormat = str_replace('\\\\', '\\', preg_quote($format, '/'));

            // Build the regex string
            $regex = '';

            for ($i = 0; $i < strlen($quotedFormat); ++$i) {
                // Backslash – the next character does not represent a date token so add it on as-is and continue.
                // We're doing an extra ++$i here to increment the loop by 2.
                if ($quotedFormat[$i] === '\\') {
                    $char = $quotedFormat[++$i];
                    $regex .= $char === '\\' ? '\\\\' : $char;

                    continue;
                }

                $regex .= strtr($quotedFormat[$i], static::$regexFormats);
            }

            return (bool) preg_match('/^'.str_replace('/', '\\/', $regex).'$/', $date);
        } catch (InvalidArgumentException $e) {
        }

        return false;
    }

    /**
     * Returns true if the current date matches the given string.
     *
     * @example
     * ```
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('2019')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('2018')); // false
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('2019-06')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('06-02')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('2019-06-02')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('Sunday')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('June')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('12:23')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('12:23:45')); // true
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('12:23:00')); // false
     * var_dump(Carbon::parse('2019-06-02 12:23:45')->is('12h')); // true
     * var_dump(Carbon::parse('2019-06-02 15:23:45')->is('3pm')); // true
     * var_dump(Carbon::parse('2019-06-02 15:23:45')->is('3am')); // false
     * ```
     *
     * @param string $tester day name, month name, hour, date, etc. as string
     *
     * @return bool
     */
    public function is(string $tester)
    {
        $tester = trim($tester);

        if (preg_match('/^\d+$/', $tester)) {
            return $this->year === intval($tester);
        }

        if (preg_match('/^\d{3,}-\d{1,2}$/', $tester)) {
            return $this->isSameMonth(static::parse($tester));
        }

        if (preg_match('/^\d{1,2}-\d{1,2}$/', $tester)) {
            return $this->isSameDay(static::parse($this->year.'-'.$tester));
        }

        $modifier = preg_replace('/(\d)h$/i', '$1:00', $tester);

        /* @var CarbonInterface $max */
        $median = static::parse('5555-06-15 12:30:30.555555')->modify($modifier);
        $current = $this->copy();
        /* @var CarbonInterface $other */
        $other = $this->copy()->modify($modifier);

        if ($current->eq($other)) {
            return true;
        }

        if (preg_match('/\d:\d{1,2}:\d{1,2}$/', $tester)) {
            return $current->startOfSecond()->eq($other);
        }

        if (preg_match('/\d:\d{1,2}$/', $tester)) {
            return $current->startOfMinute()->eq($other);
        }

        if (preg_match('/\d(h|am|pm)$/', $tester)) {
            return $current->startOfHour()->eq($other);
        }

        if (preg_match(
            '/^(january|february|march|april|may|june|july|august|september|october|november|december)\s+\d+$/i',
            $tester
        )) {
            return $current->startOfMonth()->eq($other->startOfMonth());
        }

        $units = [
            'month' => [1, 'year'],
            'day' => [1, 'month'],
            'hour' => [0, 'day'],
            'minute' => [0, 'hour'],
            'second' => [0, 'minute'],
            'microsecond' => [0, 'second'],
        ];

        foreach ($units as $unit => [$minimum, $startUnit]) {
            if ($median->$unit === $minimum) {
                $current = $current->startOf($startUnit);

                break;
            }
        }

        return $current->eq($other);
    }
}