[SOLVED] Help Please date calculation

[rugzo]

Hi all,

 

i have a problem by date calculation.

 

$buayisim2 = date('M-Y',mktime(0,0,0,date("m")-2)) ;

$buayisim3 = date('M-Y',mktime(0,0,0,date("m")-3)) ;

$buayisim4 = date('M-Y',mktime(0,0,0,date("m")-4)) ;

$buayisim5 = date('M-Y',mktime(0,0,0,date("m")-5)) ;

$buayisim6 = date('M-Y',mktime(0,0,0,date("m")-6)) ;

 

the above code works fine except $buayisim4.

 

$buayisim2 reproduces Apr-2009

$buayisim3 reproduces Mar-2009

$buayisim4 reproduces Mar-2009

$buayisim5 reproduces Jan-2009

$buayisim6 reproduces Dec-2008

 

Whatever i do i don't get the february. 4 should produce february but instead of that i get march like the 3.

Does anyone have an idea ??

 

thanks...

 

 

[Cosizzle]

This is a bug in PHP

http://bugs.php.net/bug.php?id=27789

 

I think it has something to do with the leap year

 

Also a bit off topic it might be useful to throw all this into an array and print it out (not sure the direction you were going with this, but good practice to do so)

 

$buayisim = array();
$buayisim[] = date('M-Y',mktime(0,0,0,date("m")-2)) ;
$buayisim[] = date('M-Y',mktime(0,0,0,date("m")-3)) ;
$buayisim[] = date('M-Y',mktime(0,0,0,date("m")-4)) ;
$buayisim[] = date('M-Y',mktime(0,0,0,date("m")-5)) ;
$buayisim[] = date('M-Y',mktime(0,0,0,date("m")-6)) ;

echo '<pre>';
print_r($buayisim);
echo '</pre>';

echo $buayisim[3]

 

[PFMaBiSmAd]

As it states at the bottom of that bug report, this is not a bug. The mktime() function uses the current values for any values you don't specify. So, in the posted code, it is using the current day and year. When you give it any month that does not contain the current day number in it, it goes to the first day of the following month.

 

Just force it to use a day that exists in all months instead of the current day -

 

$buayisim2 = date('M-Y',mktime(0,0,0,date("m")-2,1));

 

And you may have a problem with octal numbers and might need to use date("n"), which will eliminate the leading zero so the numbers won't appear to be octal.

[rugzo]

Thank you PFMaBiSmAd, you'r the man

 

it worked.

 

Thank you very much...