Generating wordlist for probable backup file names

generate_backup_wordlist.php

<?php

$startYear      = 2019;
$endYear        = 2020;

for ($year = $startYear; $year <= $endYear; $year++) {
    $startMonth = 1;
    $endMonth   = 12;
    for ($month = $startMonth; $month <= $endMonth; $month++) {
        $paddedMonth = sprintf("%02d", $month);
        $startDay = 1;
        $endDay   = 31;
        for ($day = $startDay; $day <= $endDay; $day++) {
            $paddedDay = sprintf("%02d", $day);
            $startHour = 0;
            $endHour   = 23;
            for ($hour = $startHour; $hour <= $endHour; $hour++) {
                $paddedHour = sprintf("%02d", $hour);
                $startMinute = 0;
                $endMinute   = 59;
                for ($minute = $startMinute; $minute <= $endMinute; $minute++) {
                    $paddedMinute = sprintf("%02d", $minute);
                    $startSecond = 0;
                    $endSecond   = 59;
                    for ($second = $startSecond; $second <= $endSecond; $second++) {
                        $paddedSecond = sprintf("%02d", $second);
                        $startRandom = 0;
                        $endRandom   = 9999;
                        for ($random = $startRandom; $random <= $endRandom; $random++) {
                            $paddedRandom = sprintf("%04d", $random);
                            print("backup_{$year}_{$paddedMonth}_{$paddedDay}_{$paddedHour}_{$paddedMinute}_{$paddedSecond}-{$paddedRandom}-db.sql.gz").PHP_EOL;
                        }
                    }
                }
            }
        }
    }
}

// backup_2019_06_25_08_48_37-1570-db.sql.gz