I think the real question is what strategy to use.
Create a summary form. To build it query the database table for the updateable records and display a summary. Each row will have a hyperlink with the id of the record which you build up row by row. The link might be <a href="doThis.php?id=23">Tuesday's report</a>
then when the user clicks on tuesday's report they call doThis.php which looks for $id and uses that to query the table again and get all the data for record 23. It then returns a form with the data displayed. Some might be just plain html (ie readonly) and other bits might be <inputs>. When the user clicks submit php will build an update statement to update the table. It would probably then redisplay the summary table.
Remember to use addslashes() and stripslashes().