我查看了许多其他网站,这些网站指出问题是由于空白间距。我认为这不是问题,因为在我的 php 脚本结束之后和我的 php 脚本开始之前我没有留下任何空白。这是完整的错误
:无法修改标头信息 - 标头已由第 22 行的 admin/login.php 中的(输出开始于 /admin/login.php:19)发送
这是我的代码:
<?php
require_once("../../includes/database.php");
require_once("../../includes/session.php");
require_once("../../includes/user.php");
if($session->is_logged_in())
{
header("Location:index.php");
}
if(isset($_POST['submit']))
{
$username = trim($_POST['username']);
$password = trim($_POST['password']);
//Check Databases
$found_user = User::authenticate($username, $password);
$found_user->id = $found_user[0];
if($found_user)
{
$session->login($found_user);
header("Location:index.php");
}
else
{
echo "Username/password combination incorrect.";
}
} else { //form is not submitted
$username = "";
$password = "";
}
?>
<html>
<head>
</head>
<body>
<h1>Photo Gallery</h1>
<div id="main">
<h2>Staff Login</h2>
<form action="login.php" method="post">
<table>
<tr>
<td>Username:</td>
<td>
<input type="text" name="username" maxlength="30" value="" />
</td>
</tr>
<tr>
<td> Password:</td>
<td>
<input type="password" name="password" maxlength="30" value="" />
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" name="submit" value"Login" />
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
<?php if(isset($database))
{
$database->close_connection();
}
?>