Create a HTML Calendar with PHP

Learn how to make an HTML calendar using only php.

<?php
//This gets today's date
$date =time () ;
//This puts the day, month, and year in seperate variables
$day = date('d', $date) ;
$month = date('m', $date) ;
$year = date('Y', $date) ;


//Here we generate the first day of the month
$first_day = mktime(0,0,0,$month, 1, $year) ;


//This gets us the month name
$title = date('F', $first_day) ;
//Here we find out what day of the week the first day of the month falls on
$day_of_week = date('D', $first_day) ;


//Once we know what day of the week it falls on, we know how many blank days occure before it. If the first day of the week is a Sunday then it would be zero
switch($day_of_week){
    case "Sun": $blank = 0; break;
    case "Mon": $blank = 1; break;
    case "Tue": $blank = 2; break;
    case "Wed": $blank = 3; break;
    case "Thu": $blank = 4; break;
    case "Fri": $blank = 5; break;
    case "Sat": $blank = 6; break;
}


//We then determine how many days are in the current month
$days_in_month = cal_days_in_month(0, $month, $year) ;
//Here we start building the table heads
echo "<table border=1 width=294>";
echo "<tr><th colspan=7> $title $year </th></tr>";
echo "<tr><td width=42>S</td><td width=42>M</td><td
width=42>T</td><td width=42>W</td><td width=42>T</td><td
width=42>F</td><td width=42>S</td></tr>";


//This counts the days in the week, up to 7
$day_count = 1;


echo "<tr>";
//first we take care of those blank days
while ( $blank > 0 ) {
    echo "<td></td>";
    $blank = $blank-1;
    $day_count++;
}
//sets the first day of the month to 1
$day_num = 1;


//count up the days, untill we've done all of them in the month
while ( $day_num <= $days_in_month ){
    echo "<td> $day_num </td>";
    $day_num++;
    $day_count++;


//Make sure we start a new row every week
    if ($day_count > 7){
        echo "</tr><tr>";
        $day_count = 1;
    }
}
//Finaly we finish out the table with some blank details if needed
while ( $day_count >1 && $day_count <=7 ){
    echo "<td> </td>";
    $day_count++;
}

echo "</tr></table>";
?>


I found this over here at GitHub.