Calculette basique en PHP et HTML

                               

                            
/*---------------------------------------------------------------*/
/*
    Titre : Calculette basique en PHP et HTML                                                                             
                                                                                                                          
    URL   : https://phpsources.net/code_s.php?id=1189
    Date édition     : 03 Fev 2026                                                                                       
    Date mise a jour : 03 Fev 2026
                                                                                       
    Rapport de la maj:                                                                                                    
    - fonctionnement du code vérifié                                                                                
*/
/*---------------------------------------------------------------*/?>
<h2>
<?php

if (isset($_POST['num1'])) $num1 = $_POST['num1']; else $num1 = '';
if (isset($_POST['num2'])) $num2 = $_POST['num2']; else $num2 = '';
if (isset($_POST['operation'])) $operation  = $_POST['operation'];  else 
$operation = '';

if (isset($_POST['operation'])) {

   switch ($operation)
   {  case "+" : $x = $num1 + $num2; break;
      case "-" : $x = $num1 - $num2; break;
      case "*" : $x = $num1 * $num2; break;
      case "/" : $x = $num1 / $num2; break;
      default :
   }

}


?>
</h2>
</td></tr></table>
    <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
    <table>
    <tr></td><tr><td>Opérande 1</td><td><input type=text name=num1></td>
    <td rowspan=2>
    <input type=radio name=operation value="+"><b>+</b><br />
    <input type=radio name=operation value="-"><b>-</b><br />
    <input type=radio name=operation value="*"><b>*</b><br />
    <input type=radio name=operation value="/"><b>/</b><br />
    </td></tr>
    <tr><td>Opérande 2 </td><td><input type=text name=num2></td></tr>
    <tr><td><input type=submit value="Calculer"></td>
    <td colspan=2 align=center>
    <?php if (isset($x)) print "<h3> $num1 $operation $num2 = $x</h3" ; ?>
    <td><tr>
    </table>
    </form>