<td><?php 
echo $form1->calendrier('', 'date_deb', $_REQUEST['date_deb'] ? $_REQUEST['date_deb'] : '');
?>
</td>
        </tr>
        <tr>
            <td>Date de fin : </td>
            <td><?php 
echo $form1->calendrier('', 'date_fin', $_REQUEST['date_fin'] ? $_REQUEST['date_fin'] : '');
?>
</td>
        </tr>
    <?php 
echo '<tr><td colspan="2" align="center">' . $form1->btsubmit('Valider', 'valider') . '</td></tr>';
echo '</table>';
$form1->end();
echo '</div>';
$tDeb = isset($_REQUEST['date_deb']) ? Tools::get_time($_REQUEST['date_deb']) : time();
$tFin = isset($_REQUEST['date_fin']) ? Tools::get_time($_REQUEST['date_fin']) : time() + 86400 * 7;
foreach ($TWS as $id_ws => $ws_name) {
    _stat_wd($PDOdb, $id_ws, $tDeb, $tFin);
}
llxFooter();
function _get_time(&$TRes, &$TAxis, &$TSerie)
{
    foreach ($TRes as $row) {
        $tStart = strtotime($row->date_estimated_start);
        $tEnd = strtotime($row->date_estimated_end);
        if ($tStart < $tDeb) {
            $tStart = $tDeb;
        }