我不断收到此错误:
Commands out of sync; you can't run this command now
我不知道为什么会发生这种情况,以前的问题都没有帮助。
这是我的代码:
用户.php
public static function GetUserFullName($username){
if(Utilities::IsValid($username)){
$username = Utilities::SafeString($username);
Database::OpenConnection();
$query = Database::$databaseConnection->prepare("SELECT Name FROM user WHERE Username = ?") or die(Database::$databaseConnection->error);
$query->bind_param("s", $username);
$result = $query->execute();
Database::CloseConnection();
if($result){
$query->bind_result($name);
$query->fetch();
$query->close();
return $name;
}
}else return -1;
}
技能.php
public static function UpdateSkills($id, $skill, $action){
if(Utilities::IsValid($id) && Utilities::IsValid($skill) && Utilities::IsValid($action)){
$id = Utilities::SafeString($id);
$skill = Utilities::SafeString($skill);
$action = Utilities::SafeString($action);
Database::OpenConnection();
if($action == 'i'){
$skill = str_replace(" ", "", $skill);
$db = Database::$databaseConnection;
$skills = explode(",", $skill);
$query = "";
foreach ($skills as $s){
$query .= "INSERT INTO skill (User_ID,Skill) VALUES({$id},'{$s}');";
}
$result = $db->multi_query($query);
echo $db->error;
Database::CloseConnection();
if($result) return 1;
else return -1;
}else if($action == 'd'){
$query = Database::$databaseConnection->prepare("DELETE FROM Skill WHERE Skill = ? AND User_ID = ?");
$query->bind_param("si", $skill,$id);
$result = $query->execute();
Database::CloseConnection();
if($result && $query->num_rows >0) return 1;
else return -1;
}
}
return -1;
}
头文件.php
<?php
require_once 'Classes/UserLogin.php';
require_once 'Classes/User.php';
$user_fullname = User::GetUserFullName($_SESSION["username"]);
?>
<header>
<div class="welcome_area">
<p>
Welcome, <b><a href="profile.php" style="text-decoration: underline !important;"><?php echo $user_fullname; ?></a> </b>
</p>
</div>
<div class="menu">
<nav>
<ul>
<li><a href="profile.php">My Profile</a>
<ul>
<li><div><a href="#">My Questions</a></div>
</li>
<li><div><a href="#">Settings</a></div>
</li>
<li style="margin-bottom: 5px;"><div><a href="logout.php">Logout</a></div>
</li>
</ul>
</li>
<li><a href="inbox.php">Inbox</a>
</li>
<li><a href="#">Notifications</a>
</li>
</ul>
</nav>
</div>
</header>
<section id="container">
<br />
<div id="logo"></div>
<div id="content">
配置文件.php
<?php
require_once "Classes/User.php";
require_once "Classes/Skill.php";
require_once "Classes/UserLogin.php";
if(!UserLogin::IsLoggedIn("username")) header("location: login.php");
$user_details = User::GetUserDetails($_SESSION["username"]);
echo Skill::UpdateSkills(11, "programmer,designer", "i");
?>
<!DOCTYPE html>
<html>
<head>
<title>Help Exchange</title>
<link rel="stylesheet" href="css/base.css" />
<link rel="stylesheet" href="css/profile.css" />
<link rel="stylesheet" href="css/user.css" />
<link rel="stylesheet" href="css/widgets.css" />
<script src="js/jquery.min.js"></script>
<script src="js/profile.js"></script>
</head>
<body>
<script>
var user_details = eval(<?php echo $user_details; ?>);
var about = user_details.About;
</script>
<?php require_once 'admin/header.php';?>
请帮我 :'(