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我的javascript：为什么我的PHP会话不断结束，Apache偶尔会崩溃？
//Function that gets the chat from backend
function showmessage(str) {
if (str == "") {
return;
} else {
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("chat").innerHTML = this.responseText;
}
};
xmlhttp.open("GET","/backend-display.php?q="+str,true);
xmlhttp.send();
}
}
//Show any messages that will pop-up
setInterval('showmessage()',400);
//Function that updates new rows
function newrows(str) {
if (str == "") {
return;
} else {
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("test").innerHTML = this.responseText;
var elem = document.getElementById('chat');
elem.scrollTop = elem.scrollHeight;
}
};
xmlhttp.open("GET","/test2.php?success=true"+str,true);
xmlhttp.send();
}
}
//Updates new rows every x seconds
setInterval('newrows()',300);
//Backend to send a message
function loadDoc() {
var xhttp = new XMLHttpRequest();
var mes = document.getElementById("message").value;
var message = "message=" +mes;
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("input").innerHTML = this.responseText;
}
};
xhttp.open("POST", "/backend-input.php", true);
xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send(message);
document.forms["form"].reset();
}
的php.ini配置：
后端输入：
<?php include 'auth.php';?>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<?php
$name = $_SESSION["name"];
$messageunfilter = $_POST["message"];
$con = mysqli_connect('localhost','root','','chat');
if (!$con) {
die('Could not connect: ' . mysqli_error($con));
}
if(empty($_POST["message"])){
echo "You must enter a message...";
exit();
}else{
echo "success";
}
//Checking SQL
$check = array("\\", "'");
$change = array("\\\\", "''");
$messagefilter = str_replace($check, $change, $messageunfilter);
date_default_timezone_set('Europe/London');
$current_date = date("Y-m-d H:i:s");
mysqli_select_db($con,"ajax_demo");
$sql="INSERT INTO `chat` (`id`, `username`, `message`, `date`) VALUES (NULL, '$name', '$messagefilter', '$current_date')";
$result = mysqli_query($con,$sql);
mysqli_close($con);
?>
</body>
</html>
后端从DB recieving消息：
<?php
session_start();
?>
<!DOCTYPE html>
<html>
<body>
<head>
<link href="style.css" rel="stylesheet">
</head>
<?php //Selects all of the logged in users messages.
$name = $_SESSION["name"];
$con = mysqli_connect('localhost','root','','chat');
if (!$con) {
die('Could not connect: ' . mysqli_error($con));
}
mysqli_select_db($con,"ajax_demo");
$sql="SELECT * FROM `chat` ORDER BY date";
$result = mysqli_query($con,$sql);
$numrows = mysqli_num_rows($result);
if($numrows == "0" or !isset($_SESSION["name"])){
echo "<div class='msg'>";
echo "<div class='username_admin'>System</div>";
echo "<div class='msg_admin'>There are no messages to display...</div>";
echo "</div>";
exit();
}else{
echo "";
}
echo "<div class='msg_container'>";
while($row = mysqli_fetch_array($result)) {
$class_msg = "msg";
$class_username = "username";
$class_message = "message";
if ($row['username'] == $_SESSION['name']) {
$class_msg = "msg_user";
$class_username = "username_user";
$class_message = "message_user";
}
echo "<div class='$class_msg'>";
echo "<div class='$class_username'><span>" . $row['username'] . "</span></div>";
echo "<div class='$class_message'><span>" . $row['message'] . "</span></div>";
echo "</div>";
}
echo "</div>";
mysqli_close($con);
?>
</body>
</html>
我知道websockets和我的代码需要清理很多，以及我的陈述没有准备的事实。
由于某些原因，系统运行5分钟左右后，会话似乎被破坏？
我不知道这是为什么？是因为我多次请求吗？
即使我只有2个用户连接消息对方，它仍然崩溃，它可以在60秒，1分钟后崩溃？
有人可以帮我找出为什么这是，我会更感激。
非常感谢你看这篇文章，即使这意味着很多！ （对不起，我的代码超载在这里，我只是想确保我显示你的一切，我可以！）
查看apache日志查看可能的错误信息 – MiSAKACHi
@MiSAKACHi主要问题是我的会话不断被破坏，我认为apache崩溃与其他事情有关，因为它只有一次崩溃！ – Galliger