Date Time Php

#
# *** Set time stamp.Check for month requested(value from request form)
# *** If no value has been set then make it for current month
#
if(!$year){$year=2000; }
if(!$req_month || $req_month=="none")
{
$dt_and_tm=time();
}
else
{
$dt_and_tm=mktime(0,0,0,$req_month,1,$year);
}
#
# *** Find out the month number from the time stamp we just created
# *** Find out the day of the week from the same(0 to 6 for Sunday to
# *** Saturday) add "1" so that it becomes 1 to 7
#
$month=date("n",$dt_and_tm);
$week_day=date("w",$dt_and_tm)+1;
#
# *** Set number days in requested month
#
if($month==1 || $month==3 || $month==5 || $month==7 || $month==8 || $month==10 ||
$month==12)
{
$no_of_days=31;
}
elseif($month==4 || $month==6 || $month==9 || $month==11)
{
$no_of_days=30;
}
#
# *** If the month requested is Feb. Check whether it is Leap Year
#
elseif($month==2)
{
if(date("L",$dt_and_tm))
{ $no_of_days=29 ;}
else
{$no_of_days=28;}
}
$month_full=date("F",$dt_and_tm);
#
# ******* HTML code goes from here
# ******* First row in HTML table displays month and year
# ******* Second row is allotted for week days
# ******* Table contains six more rows (total 42 table cells)
#
?>








#
# *** We need to start form week day and print total number of days
# *** in this month.For that we need to find out the last cell.
# *** While looping end current row and start new row for each 7 cells
#
$last_cell=$week_day+$no_of_days;
for($i=1;$i<=42;$i++)
{
if($i==$week_day){$day=1;}
if($i<$week_day || $i>=$last_cell)
{
echo "";
if($i%7==0){echo "\n";}
}
else
{
echo "";
$day++;
if($i%7==0) { echo "\n"; }
}
}
?>

$year" ; ?>
Sunface="Arial , Times New Roman " size=2 color="#ffffff">Monface="Arial , Times New Roman " size=2 color="#ffffff">Tueface="Arial , Times New Roman " size=2 color="#ffffff">Wedface="Arial , Times New Roman " size=2 color="#ffffff">Thuface="Arial , Times New Roman " size=2 color="#ffffff">FriSat
?
$day