小编k1o*_*Tho的帖子

这是我第一次使用 PHP，我不知道这段代码有什么问题。

第 20 行是 if 语句： if (isset($_COOKIE['hash'])) {

<?php
if (!isset($_GET['page'])) {
    header('Location: /main');
    exit();
}

ini_set('display_errors','Off');
try {
    $database_host = "localhost";
    $database_name = "NAME";
    $database_user = "USER"; //name for phpMyAdmin in bplaced
    $database_pass = "*******"; //password in phpMyAdmin in bplaced
    global $db;
    $db = mysqli_connect($database_host, $database_user, $database_pass, $database_name) or 
        die('Connect Error (' . mysqli_connect_errno() . ') ' . mysqli_connect_error());
    mysqli_set_charset($db, "utf8"); 
}

if (isset($_COOKIE['hash'])) {
    $sql = $db->query("SELECT * FROM `users` WHERE `hash` = " . $db->quote($_COOKIE['hash'])); …