Authentification http sous free.

<?php
  function authenticate() {
   Header( "WWW-Authenticate: Basic realm=\"Test Authentication System\"");
   Header( "HTTP/1.0 401 Unauthorized");
   echo "Vous devez entrer un nom d'utilisateur valide et un mot de passe correct pour accéder à cette ressource\n";
   exit;
  }
  if(!isset($PHP_AUTH_USER) || ($SeenBefore == 1 && !strcmp($OldAuth, $PHP_AUTH_USER)) ) {
   authenticate();
  }
  else {
   echo "Bienvenue $PHP_AUTH_USER<BR>";
   echo "Old: $OldAuth";
   echo "<form action=\"$PHP_SELF\" method=post>\n";
   echo "<input type=hidden NAME=\"SeenBefore\" VALUE=\"1\">\n";
   echo "<input type=hidden NAME=\"OldAuth\" VALUE=\"$PHP_AUTH_USER\">\n";
   echo "<input type=submit value=\"Re Authenticate\">\n"
   echo "</FORM>\n";
  }
?>

Order deny,allow
Deny from all

<?php
session_start();
$_SESSION['key'] = rand (12345,56789);
?>