Calendar Class

<? 
class calendar { 
//Sets up some class vars 
var $month; 
var $year; 
var $firstdayofmonth; 
var $lastdayofmonth; 
var $numdays; 
var $days; 
var $monthname; 
//The constructor class gets pertinent dates and set them to the class vars 
function calendar() { 
 global $month, $year; 
  
 //If the month isn't set set it top the current month 
 if ($month == "") $month = DATE("m"); 
 $this->month = $month; 
  
 //If the year isn't set set it top the current month 
 if ($year == "") $year = DATE("Y"); 
 $this->year = $year; 
  
 //This gets the number of days in the current month 
 $this->numdays = date("t", mktime(0,0,0,$this->month, DATE("d"), $this->year)); 
  
 //This gets the month name for current month 
 $this->monthname = date("F", mktime(0,0,0,$this->month, DATE("d"), $this->year)); 
  
 //This gets the first day of the month 
 $this->firstdayofmonth = DATE("D", mktime(0,0,0,$this->month, 1, $this->year)); 
  
 //This gets the last day of the month 
 $this->lastdayofmonth = DATE("D", mktime(0,0,0,$this->month, $this->numdays, $this->year)); 
  
 //This assigns the daynames to an array for use later 
 $this->days = array("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"); 
 } 
//This sets some user defined cosmetic vars 
function set_attributes($colsize, $daycolor, $linkcolor, $bgcolor, $linksize, $daysize, 
      $headersize, $headercolor, $headerweight, $dayheight, $fontface) { 
 $this->daycolor = $daycolor; 
 $this->linkcolor = $linkcolor; 
 $this->bgcolor = $bgcolor; 
 $this->linksize = $linksize; 
 $this->daysize = $daysize; 
 $this->headersize = $headersize; 
 $this->headercolor = $headercolor; 
 $this->headerweight = $headerweight; 
 $this->colsize = $colsize / 7; 
 $this->fontface = $fontface; 
 $this->dayheight = $dayheight; 
 } 
//Get the number of the firstday of the month like 1 for Sunday, 2 for Monday, etc.... 
function getfirst() { 
 //Reset the $days array 
 reset($this->days); 
 //Loop through the $days array and look for a match for the 
 //firstdayofmonth and then assign the key to var $colspan 
 while(list($key,$val) = each ($this->days)) { 
  if ($this->firstdayofmonth == $val) { 
   $colspan = $key; 
   } 
  } 
 return $colspan; 
 } 
function getlast() { 
//Reset the $days array 
 reset($this->days); 
 //Loop through the $days array and look for a match 
 //for the lastdayofmonth and then assign the key to var $remainder 
 while(list($key,$val) = each ($this->days)) { 
  if ($this->lastdayofmonth == $val) { 
   $remainder = 6 - $key; 
   } 
  } 
 return $remainder; 
 } 
//This function creates the link for the previous year 
function prev_year() { 
 global $PHP_SELF; 
 return sprintf('<a href="%s?month=%s&year=%s" 
     style="font-family:%s;text-decoration:none; 
     color:%s; font-size:%spx">%s</a>', $PHP_SELF, 
     $this->month, $this->year - 1, $this->fontface, 
     $this->linkcolor, $this->linksize, 
     $this->year - 1); 
 } 
//This function creates the link for the next year 
function next_year() { 
global $PHP_SELF; 
return sprintf('<a href="%s?month=%s&year=%s" 
    style="font-family:%s;text-decoration:none; 
    color:%s; font-size:%spx">%s</a>', $PHP_SELF, $this->month, 
    $this->year + 1, $this->fontface, $this->linkcolor, 
    $this->linksize, $this->year + 1); 
} 
//This function creates the link for the previous month 
function prev_month() { 
 global $PHP_SELF; 
 //Check to see if the month is not January 
 if ($this->month > 1) { 
  $prevm = sprintf('<a href="%s?month=%s&year=%s" 
      style="font-family:%s;text-decoration:none; 
      color:%s; font-size:%spx"><<</a> ', 
      $PHP_SELF, $this->month - 1, $this->year, $this->fontface, 
      $this->linkcolor, $this->linksize); 
  } 
 //If it is January our prev link will be December of the previous year 
 else { 
  $prevm = sprintf('<a href="%s?month=%s&year=%s" 
       style="font-family:%s;text-decoration:none; 
       color:%s; font-size:%spx"><<</a> ', 
       $PHP_SELF, 12, $this->year - 1, $this->fontface, 
       $this->linkcolor, $this->linksize); 
  } 
 return $prevm; 
 } 
//This function creates the link for the next month 
function next_month() { 
 global $PHP_SELF; 
  
 //Check to see if the month is not December 
 if ($this->month < 12) { 
  $nextm = sprintf(' <a href="%s?month=%s&year=%s" 
       style="font-family:%s;text-decoration:none; 
       color:%s; font-size:%spx">>></a>', 
       $PHP_SELF, $this->month + 1, $this->year, 
       $this->fontface, $this->linkcolor, $this->linksize); 
  } 
 //If it is December our next link will be January of the next year 
 else { 
  $nextm = sprintf(' <a href="%s?month=%s&year=%s" 
       style="font-family:%s;text-decoration:none; 
       color:%s; font-size:%spx">>></a>', 
       $PHP_SELF, 1, $this->year + 1, $this->fontface, 
       $this->linkcolor, $this->linksize); 
  } 
 return $nextm; 
 } 
//This is the main function and the one that generates the html for the calendar 
function make_calendar() { 
 $result .= sprintf('<table bgcolor="%s" width=%s border=0 
      cellspacing="0"cellpadding="4">', $this->bgcolor, 
      $this->colsize * 7); 
 $result .= sprintf('<tr><td width="%s">%s</td><td colspan=5 
      align=center width="%s">%s<span style="font-family:%s; 
      font-size:%s;color:%s;font-weight:%s">%s 
      </span>%s</td><td width="%s">%s</td></tr>%s', 
      $this->colsize, $this->prev_year(), $this->colsize * 5, 
      $this->prev_month(), $this->fontface, $this->headersize, 
      $this->headercolor, $this->headerweight, $this->monthname, 
      $this->next_month(), $this->colsize, $this->next_year(), "\n"); 
 $result .= '<tr align="center">'; 
 //Reset the $days array 
 reset($this->days); 
 //Loop through the days array and create a cell for each day 
 for($i=0;$i<count($this->days);$i++) { 
 $result .= sprintf('<td width="%s"><span style=" 
      font-family:%s;font-size:%s;color:%s; 
      font-weight:%s">%s</span></td>', $this->colsize, 
      $this->fontface, $this->headersize, $this->headercolor, 
      $this->headerweight, $this->days[$i]); 
  } 
 $result .= '</tr><tr align="center">'."\n"; 
  
 //This sets the offset for the first day of the onth in the calendar 
 if ($this->getfirst() > 0) { 
  $result .= sprintf('<td colspan=%s height="%s"> 
        </td>', $this->getfirst(), 
       $this->dayheight); 
  } 
  
 //This is the day counter 
 $count = $this->getfirst() + 1; 
  
 //This loops runs through the number fo days in the month 
 for($j=1;$j<=$this->numdays;$j++) { 
  
 //Create the cells for the indivdual days 
 //Divide the current count by 7 if there is no remainder we no we need 
 //to end the row and start a new one 
 if (is_int($count/7)) { 
  $result .= sprintf('<td height="%s"><span style=" 
       font-family:%s;font-size:%s;color:%s">%s</span> 
       </td></tr><tr align="center">%s', $this->dayheight, 
       $this->fontface, $this->daysize, $this->daycolor, 
       $j, "\n"); 
  } 
 //Or elese we just print a row 
 else { 
  $result .= sprintf('<td height="%s"><span style=" 
       font-family:%s;font-size:%s;color:%s">%s</span> 
       </td>', $this->dayheight, $this->fontface, 
       $this->daysize, $this->daycolor, $j); 
  } 
 //INcrement the day counter 
 $count++; 
 } 
 //Check to see if there are left over spaces to fill up the week if so make 
 //a cell with colspan set to that number of spaces 
 if ($this->getlast() > 0) { 
  $result .= sprintf('<td colspan=%s height="%s"> </td>%s 
       ', $this->getlast(), $this->dayheight, "\n"); 
  } 
 //End the cell 
 $result .= sprintf('</tr></table>'); 
  
 return $result; 
 } 
  
 } 
//Sample 
//Instaniate the calendar class 
$cal = new calendar; 
//This will set look and feel for the calendar 
/* 
1st argument is the width of the calendar and should be divisble by 7 
2nd argument is the font color for the numbered days in the calendar 
3rd argument is the link color 
4th argument is the background color for the calendar 
5th argument is the font size for the link in pixels 
6th argument is the font size for the numbered days in pixels 
7th argument is the font size for the day header and month name in pixels 
8th argument is the font color for the day header and month name 
9th argument is the font weight for the day header and month name 
10th argument is the height of the cells that contain the days 
11th argument is the font face for the calendar 
*/ 
$cal->set_attributes(210, "#000000", "#ff0000", "#cccccc", 
      11, 11, 12, "navy", "bold", 
      20, "Arial, Helvetica, Sans-Serif"); 
//Print the calendar 
print $cal->make_calendar(); 
?>
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