Project Calendar - Month-View Generator

Here is the code of the function that generates the calendar, passing two variables (static or user generated).

function renderCalendar($strMonth, $strYear) {
     $date = mktime(12, 0, 0, $strMonth, 1, $strYear);
     $daysInMonth = date("t", $date);
     $dayOffset = date("w", $date);
  
     $calendarWeeks = ceil(($daysInMonth + $dayOffset) / 7) - 1; //how many weeks (rows) in the month
  
     echo "*****HTML Code for Table *****";

     for ($rowIndex = 0; $rowIndex <= $calendarWeeks; $rowIndex++) {
          echo "*****HTML Code for Table Row *****";
               for ($colIndex = 1; $colIndex <= 7; $colIndex++) {
                    $currentDay = ($colIndex - $dayOffset) + ($rowIndex * 7);

                    if ($currentDay < 1 or $currentDay > $daysInMonth) {
                         echo "*****HTML Code for empty cell *****";
                    } else {
                         echo "*****HTML Code for date cell *****";
                    }
               }
               echo "*****HTML Code for closing Table Row *****";
          }
     }

You can check the result here.