static function displayMySQLError()
{
if (!isCommandLine()) {
Html::nullHeader("Mysql Error", '');
echo "<div class='center'><p class ='b'>\n A link to the SQL server could not be established. Please check your configuration.\n </p><p class='b'>\n Le serveur Mysql est inaccessible. Vérifiez votre configuration</p>\n </div>";
Html::nullFooter();
} else {
echo "A link to the SQL server could not be established. Please check your configuration.\n";
echo "Le serveur Mysql est inaccessible. Vérifiez votre configuration\n";
}
die;
}