php/index.php

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<?php
/* index.php
 *
 * Copyright (C) 2016 Ing. Stefano Salvi
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */
?><!DOCTYPE html>
<html lang="it">
  <head>
    <title>Raspberry-My Programmazione in PHP</title>
    <meta  name="author" content="Ing. Stefano Salvi">
    <meta charset="utf-8">
    <link rel="stylesheet" type="text/css" href="../css/index.css">
    <script type="text/javascript" src="../js/index.js"></script>
  </head>
  <body>
    <!-- Dialog -->
    <div id="isf_overlay">
      <div id="isf_overlay_frame">
        <div id="isf_overlay_content">
              <h2>
                  Dialog modale visualizzato dal Javascript
              </h2><p>
                  &Egrave; possibile fare comparire un dialog sopra la pagina, che scompaia con un bottone.
              </p>
        </div>
        <div id="isf_overlay_bottom">
          <input id="isf_overlay_close_button" type="button" onClick="closeDialog()" value="Chiudi">
        </div>
      </div>
    </div>
    <!-- Fine Dialog -->
    <!-- Slideshow -->
    <div id="testa-carousel">
      <div id="testa-slideshow">
            <img src="../img/little_pi.png" alt="Raspberry Pi 3" width="400" height="400" />
            <img src="../img/raspberry-pi-2-angle-100569133-orig.png" alt="Raspberry Pi 3" width="400" height="400" />
            <img src="../img/Raspberry_Pi_-_Model_A.jpg" alt="Raspberry Pi Model A" width="400" height="400" />
            <img src="../img/rpi1bplus.png" alt="Raspberry Pi 2" width="400" height="400" />
      </div>
    </div>
    <!-- Fine Slideshow -->
    <script type="text/javascript">var slides = new Slideshow('testa-slideshow', 1000, 400);</script>
    <h1>Esempi di programmazione in PHP</h1>
    <p>[<a href="../index.html#php">Ritorna</a>]</p>
    <p><input type="button" onClick="openDialog()" value="Apri Dialog"></p>
<?php
  print "    
\n";
  print "      <p>Primo numero: <input type=\"text\" name=\"primo\" value=\"$_REQUEST[primo]\"><br>\n";
  print "      Secondo numero: <input type=\"text\" name=\"secondo\" value=\"$_REQUEST[secondo]\"><br>\n";
  print "      <input type=\"submit\" value=\"Somma\"></p>\n";
  print "    </form>\n";
  if (array_key_exists("primo", $_REQUEST)) {
    if ($_REQUEST["primo"] === '') {
      print "<div class=\"error\">Il Primo numenro non pu&ograve; essere vuoto</div>";
    } elseif ($_REQUEST["secondo"] === '') {
      print "<div class=\"error\">Il Primo numenro non pu&ograve; essere vuoto</div>";
    } elseif (!preg_match("/^-?[0-9]*$/", $_REQUEST["primo"])) {
      print "<div class=\"error\">Il Primo numenro non &egrave; un numero</div>";
    } elseif (!preg_match("/^-?[0-9]*$/", $_REQUEST["secondo"])) {
      print "<div class=\"error\">Il Secondo numenro non &egrave; un numero</div>";
    } else {
      print "<div class=\"display\">$_REQUEST[primo] + $_REQUEST[secondo] = " . ($_REQUEST["primo"] + $_REQUEST["secondo"]) . "</div>";
    }
  }

  print '    <div class="display">';
  print '      <h2>Directory del Web</h2>';
  print '      <ul>';
  $dir = "../";

  if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
      while (($file = readdir($dh)) !== false) {
        $type = filetype($dir . $file);
        print "<li>$type: $file</li>";
      }
      closedir($dh);
    }
  }
  print '    </div>';
  print '    <div id="footer">';
  print '      <span class="author">Autore Stefano Salvi</span> <a href="mailto:stefano@salvi.mn.it" title="Indirizzo Mail di Salvi">stefano@salvi.mn.it</a>';
  print '      Rilasciato su licenza <a href="https://creativecommons.org/licenses/by-sa/3.0/it/legalcode" title="Attribuzione CC-by-sa">CC-BY-SA</a><br>';
  print '      <a href="https://creativecommons.org/licenses/by-sa/3.0/it/legalcode" title="Attribuzione CC-by-sa"><img src="../img/cc_by_sa_88x31.png" alt="Logo Creative Commons" title="Logo Creative Commons"></a>';
  print '      </ul>';
  print '    </div>';

?>
  </body>
</html>