How to Check if a Date Falls Within a Given Range?

How to Determine if a Date is Within a Specified Range

In programming, it is often necessary to verify if a date falls within a specific time frame. To accomplish this, consider the following scenario:

Suppose you have three dates stored as strings: $start_date, $end_date, and $date_from_user. Your goal is to determine if $date_from_user falls within the range defined by $start_date and $end_date.

To simplify the comparison, converting these dates to timestamp integers is recommended. This can be achieved using the strtotime function.

Here's how to approach the problem:

$start_ts = strtotime($start_date);
$end_ts = strtotime($end_date);
$user_ts = strtotime($date_from_user);

if (($user_ts >= $start_ts) && ($user_ts <= $end_ts)) {
  // $date_from_user is within the range
} else {
  // $date_from_user is outside the range
}

In this example, $user_ts is compared to both $start_ts and $end_ts. If $user_ts is greater than or equal to $start_ts and less than or equal to $end_ts, it means that $date_from_user falls within the specified range.

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