Search the Community
Showing results for tags 'mysqli_num_rows() expects par'.
-
<?php // This page defines two functions used by the login/logout process. /* This function determines an absolute URL and redirects the user there. * The function takes one argument: the page to be redirected to. * The argument defaults to index.php. */ function redirect_user ($page = 'index.php') { $url = 'http://' . $_SERVER['localhost'] . mecicalcenter($_SERVER['PHP_SELF']); // Remove any trailing slashes: $url = rtrim($url, '/\\'); // Add the page: $url .= '/' . $page; // Redirect the user: header("Location: $url"); exit(); // Quit the script. } // End of redirect_user() function. /* This function validates the form data (the email address and password). * If both are present, the database is queried. * The function requires a database connection. * The function returns an array of information, including: * - a TRUE/FALSE variable indicating success * - an array of either errors or the database result */ function check_login($dbc, $login = '', $pass = '') { $errors = array(); // Initialize error array. // Validate the login: if (empty($login)) { $errors[] = 'You forgot to enter your login.'; } else { $lgn = mysqli_real_escape_string($dbc,trim($login)); } // Validate the password: if (empty($pass)) { $errors[] = 'You forgot to enter your password.'; } else { $p = mysqli_real_escape_string($dbc, trim($pass)); } if (empty($errors)) { // If everything's OK. // Retrieve the user_id and first_name for that email/password combination: $q = "SELECT PatientId ,firstN FROM patient WHERE login = '$lgn' AND pass = SHA1('$p')"; $r = @mysqli_query ($dbc, $q); // Run the query. // Check the result: if (mysqli_num_rows($r) == 1) { // Fetch the record: $row = mysqli_fetch_array ($r, MYSQLI_ASSOC); // Return true and the record: return array(true, $row); } else { // Not a match! $errors[] = 'The login and password entered do not match those on file.'; } } // End of empty($errors) IF. // Return false and the errors: return array(false, $errors); } // End of check_login() function.