问题描述
您必须先设置Cookie, 然后再 发送任何标头。
从手册:
setcookie()定义要与其他HTTP标头一起发送的cookie。与其他标头一样,必须在脚本的任何输出之前发送cookie(这是协议限制)。这要求您在所有输出(包括和标记以及任何空格)之前都先调用此函数。
<?PHP
ob_start();
echo "Hello\n";
setcookie("cookiename", "cookiedata");
ob_end_flush();
?>
根据的内容global.PHP
,这 可能
适合您。我所做的只是在setcookie()
调用之前删除了所有输出。如果global.PHP
其中包含任何空格或HTML输出,则将不起作用:
<?PHP
include "global.PHP";
if(isset($_POST["email"])){
$email = $_POST["email"];
$password = sha1($_POST["password"]);
$check = MysqLi_query($con, "SELECT * FROM Earth WHERE `email`='$email' AND `password`='$password'");
$check = MysqLi_num_rows($check);
if($check == 1){
setcookie("PeopleHub", $email, 0, '/');
echo "We logged you in!";
}
else {
echo "We Couldn't log you in!";
}
}
?>
<h2>Login</h2>
<?PHP
echo "We currently have <b>" . $usercount . "</b> members, <b>" . $onlinecount . "</b> of which are online. ";
?>
<br>
<br>
<form action="<?PHP echo $_SERVER['REQUEST_URI']; ?>" method="post">
Email <input name="email" placeholder="Email Address" required="" type="text"><br>
Password <input name="password" placeholder="Password" required="" type="password"><br>
<input type="reset" value="Start Over">
<input type="submit" value="Login">
</form>
解决方法
我进行了登录,设置了一个带有估算电子邮件地址值的cookie,因此在global.php文件中,它使用以下命令存储用户数据数组:
$email = $_COOKIE["PeopleHub"];
$getuserdata = mysqli_query($con,"SELECT * FROM Earth WHERE email='$email'");
$userdata = mysqli_fetch_array($getuserdata,MYSQLI_ASSOC);
cookie尚未设置,我知道这是因为我做了一个测试文件:
echo $_COOKIE["PeopleHub"];
它只是做了一个空白页。
登录代码(设置cookie的位置):
<?php
include "global.php";
?>
<h2>Login</h2>
<?php
echo "We currently have <b>" . $usercount . "</b> members,<b>" . $onlinecount . "</b> of which are online. ";
?>
<br>
<br>
<?php
if(isset($_POST["email"])){
$email = $_POST["email"];
$password = sha1($_POST["password"]);
$check = mysqli_query($con,"SELECT * FROM Earth WHERE `email`='$email' AND `password`='$password'");
$check = mysqli_num_rows($check);
if($check == 1){
setcookie("PeopleHub",$email,'/');
echo "We logged you in!";
}
else {
echo "We couldn't log you in!";
}
}
?>
<form action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="post">
Email <input name="email" placeholder="Email Address" required="" type="text"><br>
Password <input name="password" placeholder="Password" required="" type="password"><br>
<input type="reset" value="Start Over">
<input type="submit" value="Login">
</form>