voici mon code:
<!doctype html>
<html lang="fr">
<head>
<title>Calculatrice</title>
<meta charset="utf-8">
<style>
table { border-collapse:collapse; }
table,td { border:1px solid black; font-family:monospace;}
td { padding:15px; }
a { text-decoration:none; }
</style>
</head>
<body>
<h2>Calculatrice</h2>
<table>
<tr>
<td><a href="calculatrice.php?fonction=e">E</a></td>
<td><a href="calculatrice.php?fonction=c">C</a></td>
<td><a href="calculatrice.php?touche=%28">(</a></td>
<td><a href="calculatrice.php?touche=%29">)</a></td>
</tr>
<tr>
<td><a href="calculatrice.php?touche=7">7</a></td>
<td><a href="calculatrice.php?touche=8">8</a></td>
<td><a href="calculatrice.php?touche=9">9</a></td>
<td><a href="calculatrice.php?touche=%2B">+</a></td>
</tr>
<tr>
<td><a href="calculatrice.php?touche=4">4</a></td>
<td><a href="calculatrice.php?touche=5">5</a></td>
<td><a href="calculatrice.php?touche=6">6</a></td>
<td><a href="calculatrice.php?touche=-">-</a></td>
</tr>
<tr>
<td><a href="calculatrice.php?touche=1">1</a></td>
<td><a href="calculatrice.php?touche=2">2</a></td>
<td><a href="calculatrice.php?touche=3">3</a></td>
<td><a href="calculatrice.php?touche=%2A">*</a></td>
</tr>
<tr>
<td><a href="calculatrice.php?touche=0">0</a></td>
<td><a href="calculatrice.php?touche=%2C">,</a></td>
<td><a href="calculatrice.php?touche=%3D">=</a></td>
<td><a href="calculatrice.php?touche=%2F">/</a></td>
</tr>
</table>
<p><b>Expression:</b> <?php
$expression='';
if (isset($_GET['touche']))
{$expression.=$_GET['touche'] ;
}echo $expression;
?>
<p><b>Résultat:</b> </p>
</body>
</html>
