How do I set first day of the week to Monday when using Week(Date) in PHP/MySQL?

Question

I am using the following code to build a Google Chart, to pull in all of entries in a MySQL table corresponding to the Week Numbers in a year. At the moment the Week Numbers st

Answer 1

WEEK(date[mode]); 

date = a date value.    
mode = An integer indicating the starting of the week. 

The default arugment is 0 which is sunday, setting this to 1 will be monday, 2 tuesday and so on.

week(date,1);

Answer 2

For it to work in your code, you should be able to change the query to:

"SELECT Sum(Due) FROM patient_sessions WHERE Type='Session' AND Week(Date,1)=$i"

However, I think I could go one step further and use the GROUP BY to make one sql call, and then iterate over the results;

"SELECT Week(Date,1), SUM(DUE) FROM patient_sessions WHERE Type='Session' GROUP BY Week(Date,1)"

Alternatively, you might need to use WEEK(Date,2) depending on how you want to handle weeks that span between years.