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- // function to escape data and strip tags
- function safestrip($string){
- $string = strip_tags($string);
- $string = mysql_real_escape_string($string);
- return $string;
- }
- //function to show any messages
- function messages() {
- $message = '';
- if($_SESSION['success'] != '') {
- $message = '<span class="success" id="message">'.$_SESSION['success'].'</span>';
- $_SESSION['success'] = '';
- }
- if($_SESSION['error'] != '') {
- $message = '<span class="error" id="message">'.$_SESSION['error'].'</span>';
- $_SESSION['error'] = '';
- }
- return $message;
- }
- // log user in function
- function login($username, $password){
- //call safestrip function
- $user = safestrip($username);
- $pass = safestrip($password);
- //convert password to md5
- $pass = md5($pass);
- // check if the user id and password combination exist in database
- $sql = mysql_query("SELECT * FROM table WHERE username = '$user' AND password = '$pass'")or die(mysql_error());
- //if match is equal to 1 there is a match
- if (mysql_num_rows($sql) == 1) {
- //set session
- $_SESSION['authorized'] = true;
- // reload the page
- $_SESSION['success'] = 'Login Successful';
- header('Location: ./index.php');
- exit;
- } else {
- // login failed save error to a session
- $_SESSION['error'] = 'Sorry, wrong username or password';
- }
- }
- to be sure visit this programming website >>> http://adyou.me/qtCb
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