上传这个到我的web服务器后，我去到web地址，一切都是白色/空白，甚至源代码没有任何内容…也许是一些语法错误?
我似乎找不到问题是什么，在发布这篇文章之前，我已经尝试了解决问题。
下面是我的代码:
<?php
include($_SERVER["DOCUMENT_ROOT"].'/admin/classes/classes.php'); // Include local class lib
$sess = new SessionData(); // Creates session object
//$sess->CheckValidFBSession();
if($sess->CheckValidSession()){
header('Location: home.php');
}
$log= new log($_SERVER["PHP_SELF"], $_GET, $_POST, $_SERVER['HTTP_REFERER'] );
$stats=new Statistics();
$totalusers=$stats->totalscope();
?>
<html xmlns:fb="//www.facebook.com/2008/fbml">
<script>
window.fbAsyncInit = function() {
FB.init({
appId : '<?php echo $sess->fbappid; ?>',
session : <?php echo json_encode($sess->fbsession); ?>, // don't refetch the session when PHP already has it
status : true, // check login status
cookie : true, // enable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
};
(function() {
var e = document.createElement('script');
e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
e.async = true;
document.getElementById('fb-root').appendChild(e);
}());
</script>
<title>Kuarrel | Welcome to Kuarrel!</title>
<meta name="description" content="Kuarrel is an online directory that connects people from throughout the world." />
<meta name="keywords" content="kuarrel, chaibear, chai, sa-mp, sa:mp, 2014" />
<meta name="Generator" content="JB engine designed" />
<meta name="robots" content="index, follow" />
<meta name="OriginalPublicationDate" content="2014/03/12/01:37:22">
<meta name="Headline" content="Kuarrel | Welcome to Kuarrel!">
<meta name="IFS_URL" content="/index.php">
<meta name="contentFlavor" content="PAGE">
<meta name="CPS_SITE_NAME" content="Kuarrel | Welcome to Kuarrel">
<meta name="CPS_SECTION_PATH" content="Index">
<meta name="CPS_ASSET_TYPE" content="STY">
<meta name="CPS_PLATFORM" content="HighWeb">
<meta name="CPS_AUDIENCE" content="US">
<meta property="og:title" content="Kuarrel is an online directory that connects people from throughout the world.">
<meta property="og:type" content="website">
<meta property="og:description" content="Kuarrel is an online directory that connects people from throughout the world.">
<meta property="og:image" content="http://www.kuarrel.tk/images/logo-right.jpg">
<meta property="og:url" content="http://www.kuarrel.tk/index.php">
<meta property="og:site_name" content="Kuarrel">
<!-- sO3vWw3hwrnxdrwPGTKy2ZOW6yU -->
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.Canvas.setAutoResize();
};
(function() {
var e = document.createElement('script'); e.async = true;
e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
document.getElementById('fb-root').appendChild(e);
}());
</script>
<script src="//connect.facebook.net/en_US/all.js#appId=194568130593245&xfbml=1"></script>
<center>
<table class="bordertable" cellspacing=0 cellpadding=0 border=0 width=700>
<tr><td>
<table class="bottomborder" cellspacing=0 cellpadding=0 border=0 width=100%>
<tr><td width=350 bgcolor=#3B5998>
<img src='images/logo-left.jpg'></td>
<td><table cellspacing=0 cellpadding=0 border=0 width=100%><tr><td>
<table cellspacing=0 cellpadding=0 border=0 width=100%>
<tr><td><a href='register.php'><img alt='Register' src='images/logo-right.jpg' border=0></a></td>
<td width=100% bgcolor=#3B5998> </td></tr></table></td></tr>
<tr><td><table cellspacing=0 cellpadding=4 border=0 width=100%><tr height=21>
<!--<td bgcolor=#3B5998 width=10> </td>-->
<?PHP
if(!$sess->CheckValidSession()){
include('modules/default/topnav.php');
}else{
include('modules/loggedin/topnav.php');
}
?> <td bgcolor=#3B5998 width=100%> </td>
</tr></table></td>
</tr></table>
</td></tr></table>
</td></tr>
<tr><td><table cellspacing=0 cellpadding=2 border=0 width=100%>
<tr><td valign=top>
<table cellspacing=0 cellpadding=0 border=0 width=105>
<tr><td>
<?PHP
if(!$sess->CheckValidSession()){
include('modules/default/leftnav.php');
}else{
include('modules/loggedin/leftnav.php');
}
?>
</td></tr>
</table>
</td><td width=595 valign=top>
<table class="bordertable" cellspacing=0 cellpadding=0 border=1 width=100%><tr><td>
<table cellspacing=0 cellpadding=2 border=0 width=100%>
<tr><td class='white' bgcolor=#3B5998>Welcome to Kaurrel!</td></tr></table><center><p class='title'>[ Welcome to Kaurell ]<br>
<table cellspacing=0 cellpadding=0 border=0 width=95%>
<tr><td class='larger'><?=(!empty($_GET['error']));?>"<span style='color:red;font-size:16px;'>Facebook login has been disabled for today, please try again tomorrow.</span><br><br>Kaurell is an online directory that connects people from Facebook through social networks at colleges.
<p>We have opened up Kaurell for popular consumption at <b>all colleges and universities</b>. If you are not part of a college or university, you will be added to the default Kaurell network.
<p>Your account is limited to your own college or university.
<p>You can use Kaurell to:
<br> <b>•</b> Search for people at your school
<br> <b>•</b> Find out who are in your classes
<br> <b>•</b> Look up your friends' friends
<br> <b>•</b> See a visualization of your social network
<p>To get started, click below to register with your Facebook account.<!--<br><font size="+1">Join the <?=$totalusers?> people at Kaurell today.</font>-->
<center>
<?php if(strlen($_SESSION['notpartofacollege'])>2){
echo "<b>".$_SESSION['notpartofacollege']."</b>";
}
?>
<div id="fb-root"></div>
<center><input class='inputsubmit' type="button" value='Register' onclick='javascript:document.location="register.php";'> <input class='inputsubmit' type="button" value=' Login ' onclick='javascript:document.location="login.php";'>
<br> </td></tr></table> </td></tr></table>
</td></tr></table>
<center>
<?PHP include('modules/default/bottomnav.php'); ?>
</center><br>
</td></tr></table>
试着把这个放在文件的顶部:
<?php
error_reporting(E_ALL);
ini_set('display_errors', '0');
?>
下面这个:
<?php
print_r(array_keys(get_defined_vars()));
print_r(array_values(get_defined_vars()));
?>