PHP Date Calculation

[Anon]

I'm trying to write a script that will set the dat to the previous monday from today's date. the script that I have come up with (I'm new to this) is

$today=getdate();
$day=$today[wday];

if($day == 1) $beg_date = date('Y-m-d');
else if($day == 2) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-1,date('Y')));
else if($day == 3) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-2,date('Y')));
else if($day == 4) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-3,date('Y')));
else if($day == 5) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-4,date('Y')));
else if($day == 6) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-5,date('Y')));
else if($day == 0) $beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-6,date('Y')));

This seems to work except for when the previous monday was part of the previous month, then it seems like one of the negative calculations is used to jump to the previous month and therefore I get he previous tuesday instead of monday. Any suggestions for how to improve this script?

[jcarver]

Hi Seth,

Well, I didn't look closely enough at your code to figure out what was wrong, but sometimes the best thing to do is look for more simple ways to write it, and the answer will come clear.

I can see a way to reduce that code quite a bit:

$today=getdate();
$lessDays = $today[wday] - 1;
if($lessDays < 0)
$lessDays += 7;

$beg_date = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-$lessDays,date('Y')));

Like I said, although this isn't a direct answer to your question, the simpler code may help you to spot other bugs. Please tell me if this helped.

~Jason

[Anon]

$time = time() - 86400; // Yesterday

while(date("w", $time) != 1)
{
$time -= 86400;
}

echo date("m-d-Y", $time);

[Anon]

Thanks for your reply, I had to make a small addition just to check what today was first .

$today=getdate();
$day=$today[wday];
if($day == 1) $beg_date = date('Y-m-d');

else {
$time = time() - 86400; // Yesterday
while(date("w", $time) != 1)
{
$time -= 86400;
}
$beg_date = date("Y-m-d", $time);
}