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该代码在本地主机xampp服务器上完美工作，但不能在Cpanel上工作我认为sesion_start命令不工作。如果我登录使用错误密码，然后将它显示了一个错误LoinPage.php wroks其平均PHP代码，但是当我输入正确的用户名和密码，它会显示而不是带我去AdminDashboard.php
LoginPage.php登录页面php代码不工作cpanel空白页后成功完成登录
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title>Seza Admin Login</title>
<link rel="stylesheet" href="css/loginStyle.css">
</head>
<body>
<?php include("connection.php");
error_reporting(E_ALL);
$msg=null;
if(isset($_POST['login']) && $_POST['login']=='ok')
{
$username =$_POST['username'];
$password = $_POST['password'];
$selectuser = mysqli_query($conn,"select * from admins where USERNAME='".$username."' and PASSWORD ='".$password."'") or die(mysqli_error($conn));
$no_users = mysqli_num_rows($selectuser);
if($no_users>0)
{
$fetch_user = mysqli_fetch_array($selectuser);
$_SESSION['adminid']= $fetch_user['AID'];
alert("success");
header("location:AdminDashboard.php");
}
else{
$msg = "The username or password is invalid";
}
}
else{
if(isset($_POST['login']) && $_POST['login']=='ok')
{
echo"invalid";
}
}
?>
<div class="site_wrapper">
<form method="post" id="additem-form" >
<input type="hidden" id="login" name="login" value="ok" />
<div class="login">
<div class="login-screen">
<div class="app-title">
<h1>SezaPharma</h1>
<h3>ADMIN LOGIN</h3>
</div>
<div class="login-form">
<div class="control-group">
<input type="text" class="login-field" value="" placeholder="username" id="username" name="username">
<label class="login-field-icon fui-user" for="login-name"></label>
</div>
<div class="control-group">
<input type="password" class="login-field" value="" placeholder="password" id="password" name="password">
<label class="login-field-icon fui-lock" for="login-pass"></label>
</div>
<button class="btn btn-primary btn-large btn-block" type="submit" value="login" >login</button>
<a class="login-link" onClick="alertRset()" href="">Lost ? Reset your password?</a>
<div style="color:#FF0004">
<?php
if(isset($msg) && $msg!="")
{ ?>
<div class="alert-danger"><?php echo $msg; ?></div>
<?php }
?></div>
</div>
</div>
</div>
</form>
<script>
function alertRset() {
var txt;
if (confirm("It will Reset username and password to default.") == true) {
window.close();
window.open("resetadmin.php");
} else {
txt = "You pressed Cancel!";
}
document.getElementById("demo").innerHTML = txt;
}
</script>`enter code here`
</body>
</html>
AdminDashboard.php
<!DOCTYPE html>
<html>
<head>
</style>
</head>
<body>
<?php include("connection.php");
error_reporting(E_ALL);
if (isset($_SESSION['adminid'])) {
?>
<div class="dashboard">
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">All Products</button>
<button class="tablinks" onclick="openCity(event, 'Paris')">Add New Product</button>
<button class="tablinks" onclick="openCity(event, 'Tokyo')">Setting</button>
<a href="logout.php" ><button class="tablinks" onclick="openCity(event, 'Tokyo')" >Loggout</button></a>
</div>
<div id="London" class="tabcontent" style="overflow:auto">
<div class="site_wrapper" >
<div class="clearfix margin_top10"></div>
<div class="works01" >
<div class="container" >
<div id="grid-container" class="cbp-l-grid-fullWidth" style="overflow:visible;">
<?php
$select_post=mysqli_query($conn,"select * from products ORDER BY PID desc") or die(mysqli_error());
while($post=mysqli_fetch_array($select_post))
{
?>
<div class="cbp-item <?php echo $post['PTYPE'];?>">
<div class="cbp-caption">
<div class="cbp-caption-defaultWrap">
<img style="width:100%; height:200px;" src="UploadedImage/<?php echo $post['PIMAGELOC'];?>" alt="">
</div>
<div class="cbp-caption-activeWrap">
<div class="cbp-l-caption-alignCenter">
<div class="cbp-l-caption-body">
<h3><?php echo $post['PNAME'];?></h3>
<br />
<a href="#" class="cbp-l-caption-buttonLeft">Edit</a>
<a href="delete_product.php?PID=<?php echo $post['PID']; ?>" class="cbp-l-caption-buttonLeft" data-title="Looking Publishing <br>reasonable always">Delete</a>
</div>
</div>
</div>
</div>
</div><!-- end item -->
<?php
}
?>
</div>
</div>
</div><!-- end works section -->
<a href="#" class="scrollup">Scroll</a><!-- end scroll to top of the page-->
</div>
</div>
<div id="Paris" class="tabcontent">
<form action="add_item.php" method="post" enctype="multipart/form-data" onsubmit="return validateForm()" id="additem-form" name="additem-form">
<div class="contactcontainer">
<header>
<h1>Add new Product</h1>
</header>
<table width="100%" align="center">
<tr>
<td colspan="2">
<input style="width:74%" placeholder="Product Name" type="text" id="pname" name="pname">
</td>
</tr>
<tr>
<td colspan="2">
<select class="select" style=" width:74%;" name="cat" id="cat">
<option value="Category" selected="selected">Product Category</option>
<option value="livestock" > livestock Products</option>
<option value="Poultry">Poultry Products</option>
</select>
</td>
</tr>
<tr>
<td colspan="2" >
<div style="border:dashed; width:75%;" align="center">
<h4>Choose Product Picture</h4>
<input type="file" id="pimage" name="pimage" class="input-file" title="upload Photo/video" />
</div>
</td>
</tr>
<tr>
<td>
<select class="select" style=" width:55%;" id="ptype" name="ptype">
<option value="Type">Product Type</option>
<option value="Injections">Injections</option>
<option value="Anthilmentics">Anthilmentics</option>
<option value="Natural">Natural Products</option>
</select>
</td>
<td>
<select class="select" id="availability" style=" width:55%;" name="availability">
<option value="Availability">Availability</option>
<option value="yes">Yes</option>
<option value="no">No</option>
</select>
</td>
</tr>
<tr>
<td colspan="2">
<input style="width:74%" class="email" placeholder="Full Farmula with quantity" type="text" id="pfarmula" name="pfarmula">
</td>
</tr>
<tr>
<td colspan="2">
<textarea style="width:74%" placeholder="Product Description" id="pdesc" name="pdesc"></textarea>
</td>
</tr>
<tr>
<td colspan="2" >
<div style="width:74%" align="center">
<footer>
<button style="width:20%" id="addbtn" name="addbtn" >Add</button>
</footer>
</div>
</td>
</tr>
</table>
</div>
</form>
</div>
<div id="Tokyo" class="tabcontent">
<h3>Tokyo</h3>
<p>Tokyo is the capital of Japan.</p>
</div>
</div> <!--end of tabs-->
<script>
function validateForm()
{
var a=document.forms["additem-form"]["availability"].value;
var b=document.forms["additem-form"]["pname"].value;
var c=document.forms["additem-form"]["cat"].value;
var d=document.forms["additem-form"]["ptype"].value;
if (a=="Availability" || b=="" || c=="Category" || d=="Type")
{
alert("Please Fill All Required Field");
return false;
}
}
function openCity(evt, cityName) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
}
// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();
</script>
<!-- ######### JS FILES ######### -->
<!-- get jQuery used for the theme -->
<script type="text/javascript" src="js/universal/jquery.js"></script>
<script src="js/style-switcher/styleselector.js"></script>
<script src="js/animations/js/animations.min.js" type="text/javascript"></script>
<script src="js/mainmenu/bootstrap.min.js"></script>
<script src="js/mainmenu/customeUI.js"></script>
<script src="js/scrolltotop/totop.js" type="text/javascript"></script>
<script type="text/javascript" src="js/mainmenu/sticky.js"></script>
<script type="text/javascript" src="js/mainmenu/modernizr.custom.75180.js"></script>
<script type="text/javascript" src="js/cubeportfolio/jquery.cubeportfolio.min.js"></script>
<script type="text/javascript" src="js/cubeportfolio/main31.js"></script>
<?php } else{ echo " You mus Loggedin to acces this page"; } ?>
</body>
</html>
connection.php
<?php
session_start();
// Create connection
$conn = mysqli_connect("localhost", "username","password", "sezaphar_sezapharmadb") or die($conn->connect_error);
?>
它看起来像你的PHP混合的JavaScript（警报）。请记住，必须在发送任何实际输出之前调用header（），或者通过普通的HTML标记，文件中的空行或来自PHP。如果您在发表任何声明前已将任何内容发送给客户，则标题不起作用。 –