<http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/>

<?

if (isset($_POST[''pseudo'']) AND isset($_POST[''mensagem''])) // verifica se as variáveis existem
{
    if ($_POST[''pseudo''] != NULL AND $_POST[''message''] != NULL)
    {
        mysql_connect("localhost", "sdz", "senha");
        mysql_select_db("coursphp");

$message = mysql_real_escape_string(htmlspecialchars($_POST[''mensagem'']));
        $pseudo = mysql_real_escape_string(htmlspecialchars($_POST[''pseudo'']));

mysql_query("INSERT INTO minichat VALUES('''', ''$pseudo'', ''$mensagem'')");

        mysql_close();
    }
}




<form action="minichat.php" method="post">

<label>Pseudo:</label>
 <input type="text" name="pseudo">

<label>Message:</label>
 <input type="text" name="message">

 <input type="submit" value="Enviar">



mysql_connect("localhost", "sdz", "senha");
mysql_select_db("coursphp");

mensagnes :
$reponse = mysql_query("SELECT * FROM minichat ORDER BY ID DESC LIMIT 0,10");

mysql_close();

while ($donnees = mysql_fetch_array($reponse) )

{
  echo $donnees[''pseudo'']; ?> :  echo $donnees[''mensagem''];
}

?>