public function index() { $arrResult = []; $bolQuery = false; $error = []; if (isset($_POST['txtDocument'])) { if (!empty($_POST['txtDocument'])) { $bolQuery = true; $objConection = new Conection(); $sql = 'SELECT usu_id ,usu_nombres ,usu_apellidos ,usu_email FROM usuario WHERE usu_id =:usu_id'; error_reporting(E_ERROR | E_WARNING | E_PARSE); $objConection->query($sql); $objConection->bind(':usu_id', $_POST['txtDocument']); $arrResult = (array) $objConection->single(); if (isset($arrResult[0]) && (string) $arrResult[0] === '') { $arrResult = []; } } else { $error[] = $this->config->errors[0]; } } $this->render('example.php', ['data' => $arrResult, 'query' => $bolQuery, 'error' => $error]); }