note 33514 modified in function.mktime by stone

To calculate the date of the first day in a week from a given $year and $week_number (ex week 2 of 2003): function week_date_unix ($year, $week_number) { // Numeric day of the week for the 1st of January, $year $no = date("w", mktime(0,0,0,1,1,$year)); // First day of first week in $year $first_day = mktime(0,0,0,1,1,$year) - ($no-1) * 86400; // Add $week weeks to first day (current week is not to be added) $add_no_of_weeks = $week_number-1; return strtotime("$add_no_of_weeks weeks", $first_day); } Returns the monday in that week as a UNIX timestamp (ex 1041807600 = 6th of January 2003). --was-- [TO EDITOR: IF POSSIBLE REMOVE OLD NOTE AND THIS COMMENT - Sorry, found a bug in my script, posted 27-Jun-2003 - This one works: ] To calculate the date of the first day in a week from a given $year and $week_number (ex week 2 of 2003): function week_date_unix ($year, $week_number) { // Numeric day of the week for the 1st of January, $year $no = date("w", mktime(0,0,0,1,1,$year)); // First day of first week in $year $first_day = mktime(0,0,0,1,1,$year) - ($no-1) * 86400; // Add $week weeks to first day (current week is not to be added) $add_no_of_weeks = $week_number-1; return strtotime("$add_no_of_weeks weeks", $first_day); } Returns the monday in that week as a UNIX timestamp (ex 1041807600 = 6th of January 2003). http://www.php.net/manual/en/function.mktime.php