Help with calendar weeks

[benphp]

Alright - I spent most of the day wrestling with this one.

 

I have 6 shifts of people that rotate through our training throughout the year. I need to list them by week of the year, and the shifts will usually start the year NOT on 1. For example:

 

Week 1 - Week of Jan 04 = Shift 5

Week 2 - Week of Jan 11 = Shift 6

Week 3 - Week of Jan 18 = Shift 1

Week 4 - Week of Jan 25 = Shift 2

Week 5 - Week of Feb 01 = Shift 3

Week 6 - Week of Feb 08 = Shift 4

Week 7 - Week of Feb 16 = Shift 5

Week 8 - Week of Feb 22 = Shift 6

Week 9 - Week of Mar 01 = Shift 1

...etc

 

I was able to find the week of the year and the mondays, but I'm having a hard time matching the shifts with these dates.

 

<?php
$weekOfYear = "$year-$month-$day";
$weekOfYear = strftime("%W", strtotime("$weekOfYear"));
$weekOfYear = $weekOfYear * 1;
///////////

///FIND MONDAY
$todayIsMonday = "";
$findMonday = date('D', mktime(0,0,0,$month,$day,$year));
if($findMonday == "Mon") {
	$todayIsMonday = "<a href=\"events_shift.php?y=$year&m=$month&d=$day\">Shift $IneedToFindTheShiftNum</a><br />";
}
///FIND MONDAY
?>

[Psycho]

Just set the three variables in the function:

 

The year, the shift that will do training on the first week, and the number of total shifts

<?php

function getShiftForWeek($weekNo)
{
    $output = array();
    $initialYear = 2010;
    $firstShift  = 5;
    $totalShifts = 6;

    $firstMonday = strtotime("first monday jan $initialYear");

    $output['week'] = $weekNo;
    $output['timestamp'] = $firstMonday + (($weekNo-1) * 604800);
    $output['monthDay']  = date('M d', $output['timestamp']);
    $output['shift'] = (($weekNo + $firstShift - 1) % $totalShifts);
    if ($output['shift']==0) { $output['shift'] = $totalShifts; }

    return $output;
}

for ($week=1; $week<15; $week++)
{
    $data = getShiftForWeek($week);
    echo "Week {$data['week']} - Week of {$data['monthDay']} = Shift {$data['shift']}<br />\n";
}

?>

 

Output:

Week 1 - Week of Jan 04 = Shift 5
Week 2 - Week of Jan 11 = Shift 6
Week 3 - Week of Jan 18 = Shift 1
Week 4 - Week of Jan 25 = Shift 2
Week 5 - Week of Feb 01 = Shift 3
Week 6 - Week of Feb 08 = Shift 4
Week 7 - Week of Feb 15 = Shift 5
Week 8 - Week of Feb 22 = Shift 6
Week 9 - Week of Mar 01 = Shift 1
Week 10 - Week of Mar 08 = Shift 2
Week 11 - Week of Mar 15 = Shift 3
Week 12 - Week of Mar 22 = Shift 4
Week 13 - Week of Mar 29 = Shift 5
Week 14 - Week of Apr 05 = Shift 6

[benphp]

THANK YOU!

 

I love this site.