php判断日期范围

$targetDate = strtotime('2022-01-15'); $startDate = strtotime('2022-01-01'); $endDate = strtotime('2022-01-31'); if ($targetDate >= $startDate && $targetDate <= $endDate) { echo '目标日期在指定范围内'; } else { echo '目标日期不在指定范围内'; }