小编use*_*554的帖子

我的session_destroy()不起作用.当我以用户身份注销时,我返回浏览器,在线显示用户.哪里有错误？谢谢.:-)

file login.php

<?php
require_once('functions.php');
if(isset($_POST['submit'])){
    if((isset($_POST['username']) && $_POST['username'] != '') && (isset($_POST['password']) && $_POST['password'] != '')){
        $connection = conectDatabase();
        $query = "SELECT * FROM users WHERE username='" . $_POST['username'] . "' AND password='" . $_POST['password'] . "';";
        $result = $connection->query($query);
        if ($result->num_rows >0){
             session_start(); 
             $_SESSION['username'] = $_POST['username'];
             header('LOCATION: users.php');  
        } else {
             echo '<p class="formMessage">Username/password do not match !</p>';
        }
    } else {
        echo '<p class="formMessage">Username/Password field is empty</p>';
    }
}                        
?>

文件functions.php

<?php
function conectDatabase() {
    $connection = …