src/KsUtils/Dt.php
public static function getPrevDay($dt, $format = "Y-m-d")
    {
        $dtObj = \DateTime::createFromFormat($format, $dt);

        if (!$dtObj) {
            return "";
        }

        return $dtObj->sub(date_interval_create_from_date_string('1 days'))->format($format);
    }
public static function getPrevDay($dt, $format = "Y-m-d")
    {
        $dtObj = \DateTime::createFromFormat($format, $dt);

        if (!$dtObj) {
            return "";
        }

        return $dtObj->sub(date_interval_create_from_date_string('1 days'))->format($format);
    }
Returns previous date of given date in given format
@param  string $dt     Source date
@param  string $format Source date format
@return string Destination date or empty string if source date can't be parsed