我有一个多用户聊天应用程序，其中有四个文件，如下所示：
log.html,
index.php,
post.php and
style.css
我在服务器上安装了这些（主机：megaleech.in）＆amp;我面临以下两个问题：
a）当用户按下发送按钮时，聊天输入不会反映在聊天框内，但是当我刷新页面时，它会出现。 b）自动滚动无法正常工作
您可以在域上看到它：http://demo.megaleech.in/chting/
请帮助解决问题。
提前致谢。
我的代码如下：
log.html：这是空文件， style.css：这里没有显示
index.php如下：
<?php
session_start();
function loginForm(){
echo'
<div id="loginForm">
<form action="index.php" method="post">
<p>Please enter your name to continue:</p>
<label for="name">Name:</label>
<input type="text" name="name" id="name" />
<input type="submit" name="enter" id="enter" value="Enter" />
</form>
</div>
' ;
}
if(isset($_POST['enter'])){
if($_POST['name'] != ""){
$_SESSION['name'] = stripslashes(htmlspecialchars($_POST['name']));
}
else{
echo '<span class="error">Please type in a name</span>';
}
}
?>
<?php
if(isset($_GET['logout'])){
//Simple exit message
$fp = fopen("log.html", 'a');
fwrite($fp, "<div class='msgln'><i>User ". $_SESSION['name'] ." has left the chat session.</i><br></div>");
fclose($fp);
session_destroy();
header("Location: index.php");
}
?>
<?php
if(!isset($_SESSION['name'])){
loginForm();
}
else{
?>
<doctype html>
<head>
<title>Chat - Customer Module</title>
<link type="text/css" rel="stylesheet" href="style.css" />
</head></body>
<div id="wrapper">
<div id="menu">
<p class="welcome">Welcome, <b><?php echo $_SESSION['name']; ?></b></p>
<p class="logout"><a id="exit" href="#">Exit Chat</a></p>
<div style="clear:both"></div>
</div>
<div id="chatbox"><?php
if(file_exists("log.html") && filesize("log.html") > 0){
$handle = fopen("log.html", "r");
$contents = fread($handle, filesize("log.html"));
fclose($handle);
echo $contents;
}
?></div>
<form name="message" action="">
<input name="usermsg" type="text" id="usermsg" size="63" />
<input name="submitmsg" type="submit" id="submitmsg" value="Send" />
</form>
</div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js"></script>
<script type="text/javascript">
// jQuery Document
$(document).ready(function(){
// jQuery Document
$(document).ready(function(){
//If user wants to end session
$("#exit").click(function(){
var exit = confirm("Are you sure you want to end the session?");
if(exit==true){window.location = 'index.php?logout=true';}
});
});
function loadLog(){
var oldscrollHeight = $("#chatbox").attr("scrollHeight") - 20; //Scroll height before the request
$.ajax({
url: "log.html",
cache: false,
success: function(html){
$("#chatbox").html(html); //Insert chat log into the #chatbox div
//Auto-scroll
var newscrollHeight = $("#chatbox").attr("scrollHeight") - 20; //Scroll height after the request
if(newscrollHeight > oldscrollHeight){
$("#chatbox").animate({ scrollTop: newscrollHeight }, 'normal'); //Autoscroll to bottom of div
}
},
});
}
setInterval("loadLog() ",1000);
$("#submitmsg").click(function(){
var clientmsg = $("#usermsg").val();
$.post("post.php", {text: clientmsg});
$("#usermsg").attr("value", "");
return false;
});
});
</script>
<?php
}
?>
</body>
</html>
post.php如下：
<?php
session_start();
if(isset($_SESSION['name'])){
$text = $_POST['text'];
$fp = fopen("log.html", 'a');
fwrite($fp, "<div class='msgln' id='chat".date("U")."'>(".date("g:i A").") <b>".$_SESSION['name']."</b>: ".stripslashes(htmlspecialchars($text))."<br></div>");
fclose($fp);
}
?>