Question

我的问题不重复，输出发送警告显示标题是从我的代码的第1行发送的写<?php。而我正试图在第一行之后开始一个会话。我一直在尝试加载文件时收到此警告。这是一个登录表单，必须使用cookie。我已经尽力了。中号

警告：session_start（）[function.session-start]：无法发送会话缓存限制器 - 已在/ home /中发送的标头（在/home/stepup/public_html/testing/admin/login.php:1中开始输出）第2行的stepup / public_html / testing / admin / login.php

这是我的代码

<?php
session_start();
require_once "connect.php";
?>
<?php
    //Initializing variables
    $loginerror= "";
    //Server request through post method
    if($_SERVER["REQUEST_METHOD"]=="POST")
    { 
        //Fetching data from form
        $username = $_POST['username'];
        $password = md5($_POST['password']);
        //Basic sanitizing 
        $username = stripslashes($username);
        $password = stripslashes($password);
        //Checking with database
        $sql = "select * from admin where username = '$username' and password = '$password'";
        $result = mysql_query($sql) or die ( mysql_error() );
        $count = 0;
        $loginerror= "";
        while ($line = mysql_fetch_assoc($result)) 
        {
            $count++;
            $username=$line["username"];
        }
        if ($count > 0) 
        {
            $_SESSION['loggedIn'] = "TRUE";
            $_SESSION['username'] = $_POST['username'];
            $_SESSION['password'] = md5($_POST['password']);
            //Redirecting
            echo("<script>window.location = 'index.php'</script>");
        } 
        else 
        {
            $_SESSION['loggedIn'] = "false";
            $loginerror = "Invalid username or password";
        } 
    }
?> 
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Free Bootstrap Admin Template : Binary Admin</title>
        <!-- BOOTSTRAP STYLES-->
        <link href="assets/css/bootstrap.css" rel="stylesheet" />
        <!-- FONTAWESOME STYLES-->
        <link href="assets/css/font-awesome.css" rel="stylesheet" />
        <!-- MORRIS CHART STYLES-->
        <link href="assets/js/morris/morris-0.4.3.min.css" rel="stylesheet" />
        <!-- CUSTOM STYLES-->
        <link href="assets/css/custom.css" rel="stylesheet" />
        <!-- GOOGLE FONTS-->
        <link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css' />
    </head>
<body>
<div id="wrapper">
    <nav class="navbar navbar-default navbar-cls-top " role="navigation" style="margin-bottom: 0">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".sidebar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="index.html">Step Up admin</a> 
        </div>
    </nav>   
    <!-- /. NAV TOP  -->
    <nav class="navbar-default navbar-side" role="navigation">
        <div class="sidebar-collapse">
            <ul class="nav" id="main-menu">
                <li class="text-center">
                    <img src="assets/img/find_user.jpg" class="user-image img-responsive"/>
                </li>
            </ul>
        </div>
    </nav>  
    <!-- /. NAV SIDE  -->
    <div id="page-wrapper" >
        <div id="page-inner">
            <div class="row">
                <div class="col-md-12">
                    <h2>Admin Login </h2>
                </div>
            </div>    
            <!-- /. ROW  -->
            <div class="row">
                <div class="col-md-12">
                <!-- Form Elements -->
                    <div class="panel panel-default">
                        <div class="panel-body">
                            <div class="row">
                                <div class="col-md-6">
                                    <form role="form" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method = "POST">
                                        <div class="form-group"><span style="color:#F00;"><?php echo $loginerror;?></span>              
                                            <input class="form-control" placeholder="Username" name="username" />
                                        </div>
                                        <div class="form-group">
                                            <input type="password" name="password" class="form-control" placeholder="Password " />
                                        </div>
                                            <input type="submit" class="btn btn-primary" value="Login" name="submit" />
                                        <div class="panel-heading">
                                            <a href="forgotpassword.php">Forgot Password ?</a>
                                        </div>
                                    </form>
                                    <br />
                                </div>
                            </div>
                        </div>
                    </div>
                <!-- End Form Elements -->
                </div>
            </div>
        </div>
    <!-- /. PAGE INNER  -->
    </div>
<!-- /. PAGE WRAPPER  -->
</div>
<!-- /. WRAPPER  -->
<!-- SCRIPTS -AT THE BOTOM TO REDUCE THE LOAD TIME-->
<!-- JQUERY SCRIPTS -->
<script src="assets/js/jquery-1.10.2.js"></script>
<!-- BOOTSTRAP SCRIPTS -->
<script src="assets/js/bootstrap.min.js"></script>
<!-- METISMENU SCRIPTS -->
<script src="assets/js/jquery.metisMenu.js"></script>
<!-- MORRIS CHART SCRIPTS -->
<script src="assets/js/morris/raphael-2.1.0.min.js"></script>
<script src="assets/js/morris/morris.js"></script>
<!-- CUSTOM SCRIPTS -->
<script src="assets/js/custom.js"></script>
</body>
</html>

我从php收到错误'无法发送会话缓存限制器'

0 个答案: