Simple PHP Calendar

Here is a simple PHP based calender script for your website.Simply copy and paste the code and get it working.

The script generates a calender widget,can be styled through CSS as desired and next and previous months can be navigated.

<?php

// core
$monthNames = Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");

if (!isset($_REQUEST["month"])) $_REQUEST["month"] = date("n");
if (!isset($_REQUEST["year"]))  $_REQUEST["year"]  = date("Y");

$cMonth = $_REQUEST["month"];
$cYear  = $_REQUEST["year"];

$prev_year = $cYear;
$next_year = $cYear;

$prev_month = $cMonth-1;
$next_month = $cMonth+1;

if ($prev_month == 0 ) {
    $prev_month = 12;
    $prev_year = $cYear - 1;
}

if ($next_month == 13 ) {
    $next_month = 1;
    $next_year = $cYear + 1;
}
?>
<div id="calendar_div" name="calendar_div">
    <table width="200">
        <tr align="center">
          <td bgcolor="#999999" style="color:#FFFFFF">
            	<table width="100%" border="0" cellspacing="0" cellpadding="0">
                    <tr>
                      <td width="50%" align="left">&nbsp;&nbsp;<a href="<?php echo $_SERVER["PHP_SELF"] . "?month=". $prev_month . "&year=" . $prev_year; ?>" style="color:#FFFFFF">Previous</a></td>
                      <td width="50%" align="right"><a href="<?php echo $_SERVER["PHP_SELF"] . "?month=". $next_month . "&year=" . $next_year; ?>" style="color:#FFFFFF">Next</a>&nbsp;&nbsp;</td>
                    </tr>
              </table>
          </td>
        </tr>
        <tr>
            <td align="center">
              <table width="100%" border="0" cellpadding="2" cellspacing="2">
                <tr align="center">
                  <td colspan="7" bgcolor="#999999" style="color:#FFFFFF"><strong><?php echo $monthNames[$cMonth-1].' '.$cYear; ?></strong></td>
                </tr>
                <tr>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>S</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>M</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>T</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>W</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>T</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>F</strong></td>
                  <td align="center" bgcolor="#999999" style="color:#FFFFFF"><strong>S</strong></td>
                </tr>

                <?php 
                	$timestamp = mktime(0,0,0,$cMonth,1,$cYear);
                	$maxday    = date("t",$timestamp);
                	$thismonth = getdate ($timestamp);
                	$startday  = $thismonth['wday'];

                  for ($i=0; $i<($maxday+$startday); $i++) {
                    if(($i % 7) == 0 ) echo "<tr>\n";
                    if($i < $startday) echo "<td></td>\n";
                    else echo "<td align='center' valign='middle' height='20px'>". ($i - $startday + 1) . "</td>\n";
                    if(($i % 7) == 6 ) echo "</tr>\n";
                  }  
                 ?>
              </table>
            </td>
        </tr>
    </table>
</div>

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