检查日期是否在日期范围内

Question

I have a database filled with a bunch of jobs, where I have startDate and endDate. What Im trying to do is to list current week and 20 weeks ahead, and see if those weeks are within the database. And when I echo it out I want the date to be green if the date exists and black if not.

It works, but the problem is that it skips the first week. So if I have 2014-07-01 as startDate and 2014-07-14 as endDate, then the second week in that example will get green, not the first one.

This is what I'v done:

UPDATED

$last = 19;
$today = new \DateTime();
$today->modify('Monday this week');

for ($i=0; $i<$last; $i++) {
  $the_week = $today->format('o-m-d');

  $sql = mysql_query("SELECT startDate,endDate FROM work WHERE '$the_week' BETWEEN startDate AND endDate'");
  $row = mysql_fetch_array($sql);

  $startdate = $row['startDate'];
  $enddate = $row['endDate'];

if(($startdate > $the_week) AND ($enddate < $the_week)) { 
 $color = "#69dd54;"; } else { $color = "#ffffff;"; }

    echo "<span style='color: ". $color ."'>". $the_week ."</span>";
    $new_today->modify('next Monday');
}

Answer 1

this is the output of your foreach loop for $the_week

2014-07-09
2014-07-16
2014-07-23
2014-07-30
2014-08-06
2014-08-13
2014-08-20
2014-08-27
2014-09-03
2014-09-10
2014-09-17
2014-09-24
2014-10-01
2014-10-08
2014-10-15
2014-10-22
2014-10-29
2014-11-05
2014-11-12
2014-11-19

as you can see the second one is outside of your date range

Try this as your loop

    //$first = 0;
    $last = 19;
    //$weeks = range($first, $last);
    $today = new \DateTime();
    $today->modify('Monday this week');

    for ($i=0; $i<$last; $i++) {        
        $the_week = $today->format('o-m-d');
        $sql = mysql_query("SELECT startDate,endDate FROM work WHERE $the_week BETWEEN startData AND endDate"); //what happend to your original query.
        $r = mysql_num_rows($sql);
        $row = mysql_fetch_array($sql);

        $startdate = $row['startDate'];
        $enddate = $row['endDate'];

       if(($startdate > $the_week) AND ($enddate < $the_week)) { 
           $color = "#69dd54;"; } else { $color = "#ffffff;";
       }

    echo "<span style='color: ". $color ."'>". $the_week ."</span>";
        $today->modify('next Monday');
    }

outputs

2014-07-07
2014-07-14
2014-07-21
2014-07-28
2014-08-04
2014-08-11
2014-08-18
2014-08-25
2014-09-01
2014-09-08
2014-09-15
2014-09-22
2014-09-29
2014-10-06
2014-10-13
2014-10-20
2014-10-27
2014-11-03
2014-11-10

Using DateTime you can increment by the 'next Monday' or any day for that matter, with a simple for loop.

also make sure to change

$startdate = $ro['startDate'];
  $enddate = $ro['endDate'];

to

$startdate = $row['startDate'];
  $enddate = $row['endDate'];

Answer 2

What is $the_week ? It appears to be a date, but there are many dates in a week. For example there is the first date of a week and the last date of the week. It could be that you have a problematic boundary condition here.

You want the start date to be before the last day of a week, and the end date to be after the first day of a week, I am assuming. Therefore the first week gets excluded because its first day is before the start date, and yet its last day is after the start date.

UPDATE:

Consider having:

$the_week = date('o-m-d', strtotime($today. ' + '. $week .' week'));
$the_week_last = date('o-m-d', strtotime($today. ($week +1) .' week'));

By the way, I would recommend you do a single SQL query for this, rather than one for every week. There is an example of how to do that here .