php绘制日历

<?php

$days=31;

echo "<table>";

for($i=1;$i<=$days;){

      echo "<tr>";

      for($j=0;$j<7;$j++){

            if($i>$days){

                   echo "<td>&nbsp;</td>";

            }else{

                   echo "<td>".$i."</td>";

            }

            $i++;

       }

       echo "</tr>";

}

echo "</table>";

?>