Dates Format by Week

[mramonster]

I have some code that I want to make sure is if not the fastest but a good way to do it. Basically it displays weeks from this current weeks monday to sunday out to 6 weeks. Then from there 4 months out by the month. Tell me what you think.

$year = date('Y');
$today_date = date('Y-m-d');
$week_1 = date('Y-m-d', strtotime("last monday"));

//Weekly Events

if ( $week_1 != $today_date ) {
		//This Week (Week 1)
	$week_1_start = date('Y-m-d', strtotime("last monday"));
	$week_1_end = date('Y-m-d', strtotime("last monday +6 days"));
	$week_1_start_long = date('M j', strtotime("last monday"));
	$week_1_end_long = date('M j', strtotime("last monday +6 days"));

	//Next Week (Week 2)
$week_2_start = date('Y-m-d', strtotime("last monday +7 days"));
$week_2_end = date('Y-m-d', strtotime("last monday +13 days"));
$week_2_start_long = date('M j', strtotime("last monday +7 days"));
$week_2_end_long = date('M j', strtotime("last monday +13 days"));

	//Week 3
$week_3_start = date('Y-m-d', strtotime("last monday +14 days"));
$week_3_end = date('Y-m-d', strtotime("last monday +20 days"));
$week_3_start_long = date('M j', strtotime("last monday +14 days"));
$week_3_end_long = date('M j', strtotime("last monday +20 days"));

	//Week 4
$week_4_start = date('Y-m-d', strtotime("last monday +21 days"));
$week_4_end = date('Y-m-d', strtotime("last monday +27 days"));
$week_4_start_long = date('M j', strtotime("last monday +21 days"));
$week_4_end_long = date('M j', strtotime("last monday +27 days"));

	//Week 5
$week_5_start = date('Y-m-d', strtotime("last monday +28 days"));
$week_5_end = date('Y-m-d', strtotime("last monday +34 days"));
$week_5_start_long = date('M j', strtotime("last monday +28 days"));
$week_5_end_long = date('M j', strtotime("last monday +34 days"));

	//Week 6
$week_6_start = date('Y-m-d', strtotime("last monday +35 days"));
$week_6_end = date('Y-m-d', strtotime("last monday +41 days"));
$week_6_start_long = date('M j', strtotime("last monday +35 days"));
$week_6_end_long = date('M j', strtotime("last monday +41 days"));
} else {
 		//This Week (Week 1)
	$week_1_start = date('Y-m-d', strtotime("now"));
	$week_1_end = date('Y-m-d', strtotime("now +6 days"));
	$week_1_start_long = date('M j', strtotime("now"));
	$week_1_end_long = date('M j', strtotime("now +6 days"));

	//Next Week (Week 2)
$week_2_start = date('Y-m-d', strtotime("now +7 days"));
$week_2_end = date('Y-m-d', strtotime("now +13 days"));
$week_2_start_long = date('M j', strtotime("now +7 days"));
$week_2_end_long = date('M j', strtotime("now +13 days"));

	//Week 3
$week_3_start = date('Y-m-d', strtotime("now +14 days"));
$week_3_end = date('Y-m-d', strtotime("now +20 days"));
$week_3_start_long = date('M j', strtotime("now +14 days"));
$week_3_end_long = date('M j', strtotime("now +20 days"));

	//Week 4
$week_4_start = date('Y-m-d', strtotime("now +21 days"));
$week_4_end = date('Y-m-d', strtotime("now +27 days"));
$week_4_start_long = date('M j', strtotime("now +21 days"));
$week_4_end_long = date('M j', strtotime("now +27 days"));

	//Week 5
$week_5_start = date('Y-m-d', strtotime("now +28 days"));
$week_5_end = date('Y-m-d', strtotime("now +34 days"));
$week_5_start_long = date('M j', strtotime("now +28 days"));
$week_5_end_long = date('M j', strtotime("now +34 days"));

	//Week 6
$week_6_start = date('Y-m-d', strtotime("now +35 days"));
$week_6_end = date('Y-m-d', strtotime("now +41 days"));
$week_6_start_long = date('M j', strtotime("now +35 days"));
$week_6_end_long = date('M j', strtotime("now +41 days"));
};
		//month following week 6 (month 7)
$month_7 = date('m', strtotime($week_6_end));
	$month_7_start = date('Y-m-d', strtotime("$week_6_end_long +1 day"));
	$month_7_end = date('Y-m-d', mktime(0, 0, 0, ($month_7 + 2), 0, $year));
	$month_7_start_long = date('M j', strtotime("$week_6_end_long +1 day"));
	$month_7_end_long = date('M j', mktime(0, 0, 0, ($month_7 + 2), 0, $year));

	//Month 8	
$month_8 = date('m', strtotime($month_7_end_long));
	$month_8_start = date('Y-m-d', mktime(0, 0, 0, ($month_8 +1), 01, $year));
	$month_8_end = date('Y-m-d', mktime(0, 0, 0, ($month_8 + 2), 0, $year));
	$month_8_start_long = date('M j', mktime(0, 0, 0, ($month_8 +1), 01, $year));
	$month_8_end_long = date('M j', mktime(0, 0, 0, ($month_8 + 2), 0, $year));

	//Month 9	
$month_9 = date('m', strtotime($month_8_end_long));
	$month_9_start = date('Y-m-d', mktime(0, 0, 0, ($month_9 +1), 01, $year));
	$month_9_end = date('Y-m-d', mktime(0, 0, 0, ($month_9 + 2), 0, $year));
	$month_9_start_long = date('M j', mktime(0, 0, 0, ($month_9 +1), 01, $year));
	$month_9_end_long = date('M j', mktime(0, 0, 0, ($month_9 + 2), 0, $year));

	//Month 10	
$month_10 = date('m', strtotime($month_9_end_long));
	$month_10_start = date('Y-m-d', mktime(0, 0, 0, ($month_10 +1), 01, $year));
	$month_10_end = date('Y-m-d', strtotime("$today_date +1 year"));
	$month_10_start_long = date('M j', mktime(0, 0, 0, ($month_10 +1), 01, $year));
	$month_10_end_long = date('M j\ \'y', strtotime("$today_date +1 year -2 days"));

// Events Page
$week_page = "http://www.mysite.com/week-";

//Echo Links
//Events by Week
echo "<h2 align=\"center\">$year Events</h2>";
echo "<h4 align=\"left\"><a href=\"http://www.mysite.com/events.php\">Upcoming Events</a></a></h4>";
echo "<p class=\"ENav\">";
echo "<a href=\"$week_page$week_1_start-thru-$week_1_end.html\">$week_1_start_long - $week_1_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$week_2_start-thru-$week_2_end.html\">$week_2_start_long - $week_2_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$week_3_start-thru-$week_3_end.html\">$week_3_start_long - $week_3_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$week_4_start-thru-$week_4_end.html\">$week_4_start_long - $week_4_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$week_5_start-thru-$week_5_end.html\">$week_5_start_long - $week_5_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$week_6_start-thru-$week_6_end.html\">$week_6_start_long - $week_6_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$month_7_start-thru-$month_7_end.html\">$month_7_start_long - $month_7_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$month_8_start-thru-$month_8_end.html\">$month_8_start_long - $month_8_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$month_9_start-thru-$month_9_end.html\">$month_9_start_long - $month_9_end_long</a>";
echo "<br />";
echo "<a href=\"$week_page$month_10_start-thru-$month_10_end.html\">$month_10_start_long - $month_10_end_long</a>";
echo "<br />";
echo "</p>";

Pumps out:

2008 Events
Upcoming Events

Aug 18 - Aug 24
Aug 25 - Aug 31
Sep 1 - Sep 7
Sep 8 - Sep 14
Sep 15 - Sep 21
Sep 22 - Sep 28
Sep 29 - Oct 31
Nov 1 - Nov 30
Dec 1 - Dec 31
Jan 1 - Aug 18 '09

[nrg_alpha]

See 'Final Iteration' post...

[nrg_alpha]

See 'Final Iteration' post...

[nrg_alpha]

$time = strtotime("last monday");
$currentYear = date('y', $time); // exmaple: 08

echo $year . ' Events <br />Upcoming Events<br /><br />';

for($i = 0; $i < 6; $i++){
	echo date('M d', $time) . ' ';
	echo '- ';
	$time += 518400; // advance 6 days
	echo date('M d', $time);

if(($yearCheck = date('y', $time)) > $currentYear){
	echo " '$yearCheck";
}

echo '<br />';
$time += 86400; // advance 1 day
}

function monthDate(){
	global $time, $currentYear;
	$yearCheck = date('y', $time);

$lastDayOfMonth = date('t', $time);
echo date('M', $time) . ' ' . $lastDayOfMonth;

switch($lastDayOfMonth){
	case 28: $time += 2419200; break;
	case 29: $time += 2505600; break;
	case 30: $time += 2592000; break;
	case 31: $time += 2678400; break;
}

echo ($yearCheck > $currentYear)? " '$yearCheck" : '';
}

echo date('M d', $time) . ' - ';
echo monthDate() . '<br />';
echo '----------------------------' . '<br />';

for($x = 0; $x < 4; $x++){
	echo date('M', $time) . ' 01 -';
	echo monthDate() . '<br />';
}

Ok, this is the final version. The output is as follows:

2008 Events 
Upcoming Events

Aug 18 - Aug 24
Aug 25 - Aug 31
Sep 01 - Sep 07
Sep 08 - Sep 14
Sep 15 - Sep 21
Sep 22 - Sep 28
Sep 29 - Sep 30
----------------------------
Oct 01 -Oct31
Nov 01 -Nov30
Dec 01 -Dec31
Jan 01 -Jan 31 '09

So mramonster, the approach here is simple. Make use of the fact that time can be gauged in seconds and add days worth of seconds to form the 1 day and 6 day blocks. So after setting the start time with strtotime("last monday"), I proceeded to make a for loop that echos out the first Monday, then every 6 days from there on in till the desired amount of weeks is complete.

Then, finally, after the remainder of the weekly schedule is completed, I call a function that checks what the last day of the current month $time contains, and output accordingly.

This iteration of code now solves the previous code’s issue (and it is even smaller, more streamlined). One word of caution, I have read that the date('t') value is not available in windows (I think meaning having a windows server). Since I do not use windows as a server, I had no problems with this code. But if you do, this [may] be an issue.

Cheers,

NRG

[Weedpacket]

nrg_alpha wrote:

    $time += 86400; // advance 1 day 

Except not all days are 86400 seconds long.

// Er... might come in handy.
function setDay($dateTime, $d)
{
	$dateTime->modify(($d - $dateTime->format('j'))." days");
	return $dateTime;
}


// When does all this begin?
if(date('w')==1)
{
	$weekly_period_start = new DateTime('Today'); // is Monday
}
else
{
	$weekly_period_start = new DateTime('last Monday');
}


$next_year = new DateTime(($weekly_period_start->format('Y')+1)."-01-01");

// The first six periods are one week long.
$starts = array($weekly_period_start);
$index=1;
for($i=1; $i<=6; ++$i)
{
	$starts[$index] = clone $weekly_period_start;
	$starts[$index]->modify("$i weeks");
	$index++;
}

// The next is at least one calendar month long, and includes the tail of the previous calendar month
$starts[$index] = clone $starts[$index-1];
$starts[$index]->modify('+2 months');
setDay($starts[$index], 1);
$monthly_period_start = $starts[$index];
$index++;

// The next two periods are one calendar month long.
for($i=1; $i<=2; ++$i)
{
	$starts[$index] = clone $monthly_period_start;
	$starts[$index]->modify("$i months");
	$index++;
}

// The last period is one year less all that has gone before.
$starts[$index] = $weekly_period_start;
$starts[$index]->modify('1 year');

// Each period ends the day before the next one starts.
for($i=0; $i<$index; $i++)
{
	$start = $starts[$i];
	$end = clone $starts[$i+1];
	$end->modify('-1 day');
	$period[$i] = array($start, $end);
}


// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

echo '<ul>';
for($i=0; $i<$index; $i++)
{
	list($start, $end) = $period[$i];
	echo '<li><a>';
	$start_format = "M j";
	if(!$crossed_new_year && $end>=$next_year)
	{
		$crossed_new_year = true;
		$end_format = "M j, 'y";
	}
	else
	{
		$end_format = "M j";
	}
	echo $start->format($start_format)," - ",$end->format($end_format);
	echo '</a></li>';
	echo"\n";
}
echo '</ul>';

[mramonster]

Woot! That worked! Thanks. This is much cleaner. I changed it up a bit to remove the list (to be consistent in browsers). Also I added links to the appropriate page.

<?php
// Er... might come in handy.
function setDay($dateTime, $d)
{
    $dateTime->modify(($d - $dateTime->format('j'))." days");
    return $dateTime;
}


// When does all this begin?
if(date('w')==1)
{
    $weekly_period_start = new DateTime('Today'); // is Monday
}
else
{
    $weekly_period_start = new DateTime('last Monday');
}


$next_year = new DateTime(($weekly_period_start->format('Y')+1)."-01-01");

// The first six periods are one week long.
$starts = array($weekly_period_start);
$index=1;
for($i=1; $i<=6; ++$i)
{
    $starts[$index] = clone $weekly_period_start;
    $starts[$index]->modify("$i weeks");
    $index++;
}

// The next is at least one calendar month long, and includes the tail of the previous calendar month
$starts[$index] = clone $starts[$index-1];
$starts[$index]->modify('+2 months');
setDay($starts[$index], 1);
$monthly_period_start = $starts[$index];
$index++;

// The next two periods are one calendar month long.
for($i=1; $i<=2; ++$i)
{
    $starts[$index] = clone $monthly_period_start;
    $starts[$index]->modify("$i months");
    $index++;
}

// The last period is one year less all that has gone before.
$starts[$index] = $weekly_period_start;
$starts[$index]->modify('1 year');

// Each period ends the day before the next one starts.
for($i=0; $i<$index; $i++)
{
    $start = $starts[$i];
    $end = clone $starts[$i+1];
    $end->modify('-1 day');
    $period[$i] = array($start, $end);
}

$week_page = "http://www.mysite.com/events/week-";
// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

for($i=0; $i<$index; $i++)
{
    list($start, $end) = $period[$i];
    $start_format = "M j";
    $link_format = "Y-m-d";
    if(!$crossed_new_year && $end>=$next_year)
    {
        $crossed_new_year = true;
        $end_format = "M j, 'y";
    }
    else
    {
        $end_format = "M j";
    }
	echo "<a href=\"$week_page";
	echo $start->format($link_format),"-thru-",$end->format($link_format);
	echo ".html\">";
    echo $start->format($start_format)," - ",$end->format($end_format);
    echo "</a>";
    echo "<br />";
    echo "\n";
}
?>

[nrg_alpha]

Weedpacket;10883239 wrote:

Except not all days are 86400 seconds long.

// Er... might come in handy.
function setDay($dateTime, $d)
{
	$dateTime->modify(($d - $dateTime->format('j'))." days");
	return $dateTime;
}


// When does all this begin?
if(date('w')==1)
{
	$weekly_period_start = new DateTime('Today'); // is Monday
}
else
{
	$weekly_period_start = new DateTime('last Monday');
}


$next_year = new DateTime(($weekly_period_start->format('Y')+1)."-01-01");

// The first six periods are one week long.
$starts = array($weekly_period_start);
$index=1;
for($i=1; $i<=6; ++$i)
{
	$starts[$index] = clone $weekly_period_start;
	$starts[$index]->modify("$i weeks");
	$index++;
}

// The next is at least one calendar month long, and includes the tail of the previous calendar month
$starts[$index] = clone $starts[$index-1];
$starts[$index]->modify('+2 months');
setDay($starts[$index], 1);
$monthly_period_start = $starts[$index];
$index++;

// The next two periods are one calendar month long.
for($i=1; $i<=2; ++$i)
{
	$starts[$index] = clone $monthly_period_start;
	$starts[$index]->modify("$i months");
	$index++;
}

// The last period is one year less all that has gone before.
$starts[$index] = $weekly_period_start;
$starts[$index]->modify('1 year');

// Each period ends the day before the next one starts.
for($i=0; $i<$index; $i++)
{
	$start = $starts[$i];
	$end = clone $starts[$i+1];
	$end->modify('-1 day');
	$period[$i] = array($start, $end);
}


// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

echo '<ul>';
for($i=0; $i<$index; $i++)
{
	list($start, $end) = $period[$i];
	echo '<li><a>';
	$start_format = "M j";
	if(!$crossed_new_year && $end>=$next_year)
	{
		$crossed_new_year = true;
		$end_format = "M j, 'y";
	}
	else
	{
		$end_format = "M j";
	}
	echo $start->format($start_format)," - ",$end->format($end_format);
	echo '</a></li>';
	echo"\n";
}
echo '</ul>';

At the risk of sounding like a complete idiot, I must confess weedpacket..I'm not getting your code. It works.. but I'm not getting it :queasy:

I see what appears to be objects (example: $weekly_period_start = new DateTime('Today'); // is Monday), yet I do not see any class declarations (nor any properties or methods). Is DateTime some built in class or something?

Also, I see the term 'clone'... err.. I tried finding this in the php manual to no avail.
If you have the time, would you be so kind as to shed some light on how your code is working.. This would be greatly appreciated! 🙂

Cheers,

NRG

[mramonster]

There is a bug, though :queasy: For the first week it is showing up as Tuesday!

Aug 18 - Aug 24
Aug 25 - Aug 31
Sep 1 - Sep 7
Sep 8 - Sep 14
Sep 15 - Sep 21
Sep 22 - Sep 28
Sep 29 - Oct 31
Nov 1 - Nov 30
Dec 1 - Dec 31
Jan 1 - Aug 17, '09

Aug 18 is a Tuesday.
However, every other week does start on Monday.

[laserlight]

Is DateTime some built in class or something?

Yes. Refer to the PHP manual on [man]date_create/man.

Also, I see the term 'clone'... err.. I tried finding this in the php manual to no avail.

Refer to the PHP manual concerning object cloning.

[laserlight]

nrg_alpha wrote:

Is DateTime some built in class or something?

Yes. Refer to the PHP manual on [man]date_create/man.

nrg_alpha wrote:

Also, I see the term 'clone'... err.. I tried finding this in the php manual to no avail.

Refer to the PHP manual concerning object cloning.

mramonster wrote:

Aug 18 is a Tuesday.
However, every other week does start on Monday.

August 18 is a Monday this year. Besides, if August 18 is a Tuesday, then August 25 is a Tuesday, not a Monday, so your statement is contradictory.

[nrg_alpha]

Thanks laserlight.. this makes more sense.. I was just dumbfounded on no class declarations of any sort.. I'll have a good read up on it.. I'm sure once I'm done, it will all make sense and fall into place.

Cheers,

NRG

[mramonster]

laserlight;10883302 wrote:

August 18 is a Monday this year. Besides, if August 18 is a Tuesday, then August 25 is a Tuesday, not a Monday, so your statement is contradictory.

Sorry, that is correct. What is happening is that the First week is coming out Aug 18, 2009-Aug 25, 2008

[laserlight]

What is happening is that the First week is coming out Aug 18 2009-Aug 25, 2008

As in you tried Weedpacket's code verbatim and the output had on the first line:

Aug 18 - Aug 25

Is that correct? If so, I cannot reproduce your problem on PHP 5.2.6.

[mramonster]

Here's my Exact Code:

// Er... might come in handy.
function setDay($dateTime, $d)
{
    $dateTime->modify(($d - $dateTime->format('j'))." days");
    return $dateTime;
}


// When does all this begin?
if(date('w')==1)
{
    $weekly_period_start = new DateTime('Today'); // is Monday
}
else
{
    $weekly_period_start = new DateTime('last Monday');
}


$next_year = new DateTime(($weekly_period_start->format('Y')+1)."-01-01");

// The first six periods are one week long.
$starts = array($weekly_period_start);
$index=1;
for($i=1; $i<=6; ++$i)
{
    $starts[$index] = clone $weekly_period_start;
    $starts[$index]->modify("$i weeks");
    $index++;
}

// The next is at least one calendar month long, and includes the tail of the previous calendar month
$starts[$index] = clone $starts[$index-1];
$starts[$index]->modify('+2 months');
setDay($starts[$index], 1);
$monthly_period_start = $starts[$index];
$index++;

// The next two periods are one calendar month long.
for($i=1; $i<=2; ++$i)
{
    $starts[$index] = clone $monthly_period_start;
    $starts[$index]->modify("$i months");
    $index++;
}

// The last period is one year less all that has gone before.
$starts[$index] = $weekly_period_start;
$starts[$index]->modify('1 year');

// Each period ends the day before the next one starts.
for($i=0; $i<$index; $i++)
{
    $start = $starts[$i];
    $end = clone $starts[$i+1];
    $end->modify('-1 day');
    $period[$i] = array($start, $end);
}

$week_page = "http://www.mysite.com/events/date-";
// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

$this_year = date('Y');
echo "<h2 align=\"center\">$this_year Events</h2>";
echo "<h4 align=\"left\"><a href=\"http://www.mysite.com/events.php\">Upcoming Events</a></a></h4>";
echo "<p class=\"ENav\">";
for($i=0; $i<$index; $i++)
{
    list($start, $end) = $period[$i];
    $start_format = "M j";
    $link_format = "Y-m-d";
    if(!$crossed_new_year && $end>=$next_year)
    {
        $crossed_new_year = true;
        $end_format = "M j, 'y";
    }
    else
    {
        $end_format = "M j";
    }
	echo "<a href=\"$week_page";
	echo $start->format($link_format),"-thru-",$end->format($link_format);
	echo ".html\">";
    echo $start->format($start_format)," - ",$end->format($end_format);
    echo "</a>";
    echo "<br />";
    echo "\n";
}
echo "</p>";

The first link is coming out:

http://www.mysite.com/events/date-2009-08-18-thru-2008-08-24.html

All the others are fine...

[laserlight]

EDIT:
Oh, I see the problem now. Let me take a good look.

[mramonster]

I have 5.2.5 btw

[mramonster]

laserlight;10883313 wrote:

EDIT:
Oh, I see the problem now. Let me take a good look.

Nope, I'll copy and paste the links:

http://www.mysite.com/events/date-2009-08-18-thru-2008-08-24.html
http://www.mysite.com/events/date-2008-08-25-thru-2008-08-31.html
http://www.mysite.com/events/date-2008-09-01-thru-2008-09-07.html
http://www.mysite.com/events/date-2008-09-08-thru-2008-09-14.html
http://www.mysite.com/events/date-2008-09-15-thru-2008-09-21.html
http://www.mysite.com/events/date-2008-09-22-thru-2008-09-28.html
http://www.mysite.com/events/date-2008-09-29-thru-2008-10-31.html
http://www.mysite.com/events/date-2008-11-01-thru-2008-11-30.html
http://www.mysite.com/events/date-2008-12-01-thru-2008-12-31.html
http://www.mysite.com/events/date-2009-01-01-thru-2009-08-17.html

[Weedpacket]

mramonster wrote:

I changed it up a bit to remove the list (to be consistent in browsers).

That sounds like a CSS issue. I figured that since it was a list of links it would make sense to make it a list.

Well, here are two more implementaions. One skips the DateTime object and just uses plain timestamps. The other uses mktime().

I also changed the URL to comply with RFC2606.

<?php

// Er... might come in handy.
function setDay($dateTime, $d)
{
	return strtotime(($d - date('j',$dateTime))." days", $dateTime);
}


// When does all this begin?
if(date('w')==1)
{
	$weekly_period_start = strtotime('Today'); // is Monday
}
else
{
	$weekly_period_start = strtotime('last Monday');
}


$next_year = strtotime((date('Y', $weekly_period_start)+1)."-01-01");

// The first six periods are one week long.
$starts = array($weekly_period_start);
$index=1;
for($i=1; $i<=6; ++$i)
{
	$starts[$index++] = strtotime("$i weeks", $weekly_period_start);
}

// The next is at least one calendar month long, and includes the tail of the previous calendar month
$starts[$index] = setDay(strtotime("+2 months", $starts[$index-1]), 1);
$monthly_period_start = $starts[$index];
$index++;

// The next two periods are one calendar month long.
for($i=1; $i<=2; ++$i)
{
	$starts[$index++] = strtotime("$i months", $monthly_period_start);
}

// The last period is one year less all that has gone before.
$starts[$index] = strtotime("1 year", $weekly_period_start);

// Each period ends the day before the next one starts.
for($i=0; $i<$index; $i++)
{
	$start = $starts[$i];
	$end = strtotime('-1 day', $starts[$i+1]);
	$period[$i] = array($start, $end);
}


$week_page = "http://www.example.com/events/date-";
// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

$this_year = date('Y');
echo "<h2 align=\"center\">$this_year Events</h2>";
echo "<h4 align=\"left\"><a href=\"http://www.example.com/events.php\">Upcoming Events</a></a></h4>";
echo "<p class=\"ENav\">";
for($i=0; $i<$index; $i++)
{
    list($start, $end) = $period[$i];
    $start_format = "M j";
    $link_format = "Y-m-d";
    if(!$crossed_new_year && $end>=$next_year)
    {
        $crossed_new_year = true;
        $end_format = "M j, 'y";
    }
    else
    {
        $end_format = "M j";
    }
    echo "<a href=\"$week_page";
    echo date($link_format, $start),"-thru-",date($link_format, $end);
    echo ".html\">";
    echo date($start_format, $start)," - ",date($end_format, $end);
    echo "</a>";
    echo "<br />";
    echo "\n";
}
echo "</p>"; 

<?php
if(date('w')==1)
{
	$weekly_period_start = strtotime('Today'); // is Monday
}
else
{
	$weekly_period_start = strtotime('last Monday');
}

list($year, $month, $day) = explode(':', date('Y:m:j', $weekly_period_start));
$next_year = mktime(0,0,0, 1, 1, $year+1);

$starts[0] = $weekly_period_start;
$starts[1] = mktime(0,0,0, $month, $day+7*1, $year);
$starts[2] = mktime(0,0,0, $month, $day+7*2, $year);
$starts[3] = mktime(0,0,0, $month, $day+7*3, $year);
$starts[4] = mktime(0,0,0, $month, $day+7*4, $year);
$starts[5] = mktime(0,0,0, $month, $day+7*5, $year);
$starts[6] = mktime(0,0,0, $month, $day+7*6, $year);

$starts[7] = mktime(0,0,0, $month+2, $day+7*6, $year);
$ym = explode(':', date('Y:m', $starts[7]));
$starts[7] = mktime(0,0,0, $ym[1], 1, $ym[0]);
$starts[8] = mktime(0,0,0, $ym[1]+1, 1, $ym[0]);
$starts[9] = mktime(0,0,0, $ym[1]+2, 1, $ym[0]);

$starts[10] = mktime(0,0,0, $month, $day, $year+1);

for($i=0; $i<10; $i++)
{
	$period[$i] = array($starts[$i], strtotime('yesterday', $starts[$i+1]));
}


$week_page = "http://www.example.com/events/date-";
// Now display and formatting.
// If we cross into a new year (kind of inevitable, that), we note it.
$crossed_new_year = false;

$this_year = date('Y');
echo "<h2 align=\"center\">$this_year Events</h2>";
echo "<h4 align=\"left\"><a href=\"http://www.mysite.com/events.php\">Upcoming Events</a></a></h4>";
echo "<p class=\"ENav\">";
for($i=0; $i<10; $i++)
{
    list($start, $end) = $period[$i];
    $start_format = "M j";
    $link_format = "Y-m-d";
    if(!$crossed_new_year && $end>=$next_year)
    {
        $crossed_new_year = true;
        $end_format = "M j, 'y";
    }
    else
    {
        $end_format = "M j";
    }
    echo "<a href=\"$week_page";
    echo date($link_format, $start),"-thru-",date($link_format, $end);
    echo ".html\">";
    echo date($start_format, $start)," - ",date($end_format, $end);
    echo "</a>";
    echo "<br />";
    echo "\n";
}
echo "</p>"; 

To fix the bug in the first version, use

// The last period is one year less all that has gone before.
$starts[$index] = clone $weekly_period_start;
$starts[$index]->modify('1 year');

[mramonster]

Thanks so much for your time! This is working perfectly so far!🙂