tutsplus，在那里你会发现一个教程，指导你完成如何创建一个简单的网络聊天的步骤。我试图遵循所说的所有内容，但在测试时我注意到一个问题。似乎用户消息没有发布到日志.html文件中。
以下是索引.php，在本例中名为chat.php：
<?php
function loginForm() {
echo '
<div id="loginform">
<form action="chat.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>';
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Basic Chat Service</title>
<meta charset="utf-8">
<link rel="stylesheet" href="style.css" title="style" type="text/css" media="screen" charset="utf-8">
</head>
<body>
<?php
if(!isset($_SESSION['name'])) {
loginForm();
}else{
?>
<div id="wrapper">
<div id="menu">
<div class="welcome">Welcome, <?php echo $_SESSION["name"]; ?></div>
<div class="logout"><a href="#" id="exit">Exit Chat</a></div>
<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 type="text" name="usermsg" id="usermsg" size="63">
<input type="submit" name="submitmsg" id="submitmsg" value="Send">
</form>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js" charset="utf-8"></script>
<script type="text/javascript">
//jQuery Document
$(document).ready(function() {
$("#exit").click(function() {
var exit = confirm("Are you sure you want to logout?");
if(exit == true) {
window.location = 'chat.php?logout=true';
}
});
$("#submitmsg").click(function() {
var clientmsg = $("#usermsg").val();
console.log(clientmsg);
$.post("post.php", {text: clientmsg});
$("#usermsg").attr("value", "");
return false;
});
function loadLog() {
var oldscrollHeight = $("#chatbox").attr("scrollHeight") - 20;
$.ajax({
url:"log.html",
cache: false,
success: function(html){
$("#chatbox").html(html);
var newscrollHeight = $("#chatbox").attr("scrollHeight") - 20;
if(newscrollHeight > oldscrollHeight) {
$("#chatbox").animate({scrollTop: newscrollHeight}, 'normal');
}
}
});
}
setInterval(loadLog, 2500);
});
</script>
<?php
}
if(isset($_GET['logout'])) {
$fp = fopen("log.html", 'a');
fwrite($fp, '<div class="msgln"><i>User '.$_SESSION['name'].' has left the chat session.</i><br></div>');
fclose($fp);
session_destroy();
header("Location: chat.php");
}
?>
</body>
</html>
这是帖子.php：
<?php
session_start();
if(isset($_SESSION['name'])) {
$text = $_POST['text'];
$fp = fopen("log.html", 'a');
fwrite($fp, "<div class='msgln'>(".date("g:i A").")<b>".$_SESSION['name']."</b>:".stripslashes(htmlspecialchars($text))."<br></div>");
fclose($fp);
}
?>
我正在使用 MAMP，文件位于 htdocs 文件夹中，所以这不是问题。
提前感谢您给我的任何帮助，如果您需要更多信息，请告诉我。
你应该在index.php中调用session_start()。
（来自评论中的马克·