PHP MSSQL每周活动

I have a table of records. The user is allowed to enter data based on the date the event happened. The table becomes something like this:

ID  Date        Name      Hrs
1   2016-03-01  Username   8    
2   2016-03-02  Username   8    
3   2016-03-03  Username   9    
4   2016-03-04  Username   10       
…               
31  2016-03-31  Username   8    
  1. I want to be able to display date (even without records) that the user didn't enter.
  2. I also want to display all the records in the table breaking them into weeks. Something like this:

    Day Date Name Hrs

    Mon 2016-03-01  Username   8    
    Tue 2016-03-02  Username   8    
    Wed 2016-03-03  Username   9    
    Thu 2016-03-04  Username   10   
    Fri 2016-03-05  Username   10
    Sat 2016-03-06  -
    Sun 2016-03-07  Username   10
    
    Mon 2016-03-08  Username   8    
    Tue 2016-03-09  -
    Wed 2016-03-10  -   
    Thu 2016-03-11  -   
    Fri 2016-03-12  Username   10
    Sat 2016-03-13  -
    Sun 2016-03-15  Username   10
    
    ...
    ...
    ...
    
    Mon 2016-03-30  Username   8    
    Tue 2016-03-31  Username   8
    

Below is my code:

<?php

...Connection to DB...

$query="SELECT *
        FROM  Table_I
        ORDER BY DATEPART(wk,date) as wk
       ";

$params = array($_REQUEST['query']);
$results = sqlsrv_query($conn, $query, array(), array( "Scrollable" => 'static' ));

if($results===false)
 { die( FormatErrors( sqlsrv_errors() ) ); }

$rows = sqlsrv_num_rows($results);
$array = array();

while ($row = sqlsrv_fetch_array($results, SQLSRV_FETCH_ASSOC)) 
    { 
      $array[] = $row;

    }
?>

<html>
<head></head>
<body>

<table border="1">

<?php

        for($a=0; $a<$rows; $a++)
        {       
        echo '<tr><td>'.$array[$a]['wk'].'</td>';
        echo '<td>'.date("l", strtotime($array[$a]['date'])).'</td>';
        echo '<td>'.date('d M Y', strtotime(strip_tags($array[$a]['date']))). "</td>";
        echo '<td>'.strip_tags($array[$a]['name'])."</td>";
        echo '<td>'.strip_tags($array[$a]['hrs'])."</td>";

        }

</body>
</html>

It prints alright but doesn't include dates the user didn't enter and doesn't break it down into each week. I'm very new to programming but it's fun though.

Please, help is greatly appreciated.

You can start with below query. I believe you can get what you want by some minor changes.

Below query gives you missing dates.

;WITH numbers AS 
( 
 SELECT cast('2016-03-01' as date) AS num
 UNION ALL 
 SELECT dateadd(day, 1, num)
   FROM numbers  
     WHERE num < '2016-03-31'
) 
select num as MissingDate
from numbers
  left join yourEventTable on yourEventTable.Dt = numbers.num
where ID is null

using above query, you can group by week number:

;WITH numbers AS 
( 
 SELECT cast('2016-03-01' as date) AS num 
 UNION ALL 
 SELECT dateadd(day, 1, num) FROM numbers  
     WHERE num < '2016-03-31'
) 
, dys as (
select num 
from numbers
)
select datepart(week, num), *
from dys 
  left join #events on #events.Dt = dys.num

with below sample,