Php setcookie（）不起作用

Question

正如标题所说我有setcookie（）函数的问题 - 它根本不起作用。如果你能指出我犯了什么错误，我真的很感激。我正在尝试创建一个简单的登录脚本：

的index.php：

<?php

include_once("mysql.php");
include_once("security.php");
global $connection;

    if (isset($_POST['name']) and isset($_POST['pass'])) {

        if($Action -> login($_POST['name'],$_POST['pass']) == true){

            $Security -> create_cookie($_POST['name']);
            echo "Login successful!";
        }
        elseif($Action -> login($_POST['name'],$_POST['pass']) == false){
            echo "Login failed! Given information was incorrect.";
        }
    }
    else{
        include_once("layout/login.php");
    }
?>

mysql.php：

<?php

$host = "localhost";
$user = "root";
$pass = "";
$db_name = "game";
global $connection;
$connection = new mysqli($host,$user,$pass,$db_name);

if($connection->connect_errno) echo "Connection to the database failed:". $connection->connect_errno.".";?>

布局/ login.php中：

<?php

echo "<form name =\"login\" method = \"post\" action=\"\" style=\"border: 1px;\">
Name:</br>
<input type=\"text\" name=\"name\" length=\"28\"><br/>
Password:</br>
<input type=\"password\" name=\"pass\"></br></br>
<input type=\"submit\" name=\"button\" value=\"Login\"/>
</form>
";
?>

和security.php：

    <?php


class Security{



function create_cookie($user){
    global $connection;

    //cookie settings
    $name    = "login_script";
    $value   = md5(md5(md5(time()).md5("65ds4fg6s1df56g165sdf"))."5sdfg5462gs1df6g8518s");
    $time    = time()+3600*24*14;
    $path    = "/";
    $domain  = "localhost";
    $sec     = 0;

    $connection -> query("UPDATE users SET session = '$value' WHERE user = '$user' LIMIT 1");

    return setcookie($name,$value,$time,$path,$domain,$sec);
}   


function encrypt($phrase){

    $salt = "d6f5g4e2rnwber21";
    $extra_salt = "2n1k";
    $pass = md5(md5($phrase).md5($salt)).$extra_salt;
    return $pass;       
}



}

class Action extends Security{

function login($urn, $pass){
    global $connection;
    $query = mysqli_query($connection,"SELECT password FROM users WHERE user = '$urn' LIMIT 1");
    $result = mysqli_fetch_row($query);
    if($result[0] == $this->encrypt($pass)){    
        return true;
    }
    elseif($result[0] != $this->encrypt($pass)){
        return false;
    }
    else{
        $error = mysqli_error();
        $errno = mysqli_errno();
        $report = "Unknown error occured: no. ".$errno.". Error: ".$error.".";
        return $report;
    }
}



$Security = new Security();
$Action = new Action();
?>

使用LiveHTTPHeader插件我得到了：

GET / HTTP/1.1
Host: localhost
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate, sdch
Accept-Language: lt,en-US;q=0.8,en;q=0.6,ru;q=0.4,pl;q=0.2
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36

HTTP/1.1 200 OK
Connection: Keep-Alive
Content-Length: 17
Content-Type: text/html
Date: Sat, 08 Aug 2015 08:03:23 GMT
Keep-Alive: timeout=5, max=100
Server: Apache/2.4.9 (Win32) PHP/5.5.12
Set-Cookie: login_script=37fd88cddf9a75f8b758ba1a62317215; expires=Sat, 22-Aug-2015 08:03:23 GMT; Max-Age=1209600; path=/; domain=localhost
X-Powered-By: PHP/5.5.12

因此，从标题的最后一部分来看，浏览器似乎应该创建一个cookie。但事实并非如此。谷歌搜索和实验过去2个小时，无法弄清问题所在。此外，如果你看到一些愚蠢或过时的东西，请随意提出额外的建议。谢谢。

好的，问题解决了。原来Chrome不允许在localhost上设置cookie（127.0.0.1似乎也不起作用）。但是，如果您将domain参数保留为空，则chrome会自动将当前网站（即使它是localhost）作为Cookie的域。我希望这会为某人节省大量时间。我要感谢那些帮助过我的人。