
<?php
  $M=$_REQUEST['M'];
  $N=$_REQUEST['N'];
  ?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">
  <head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    
    <title>Test bissextile</title>
  </head>
  <body>
  <h1>Test bissextile</h1>
  <p>
    <?php
      if($M%4==0) {
        if($M%100==0) {
          if($M%400==0) {
            $bissextile=true;
          } else {
            $bissextile=false;
          }
        } else {
          $bissextile=true;
        } 
      } else {
        $bissextile=false;
      }

      if($bissextile) {
        echo "$M est bissextile.";
      } else {
        echo "$M n'est pas bissextile.";
      }
      ?>
  </p>
  </body>
</html>