


//Display all messages
$c $db=mysql_select_db("dbname",$conn); $numcolumns=8;//Number of records displayed on each page
$query="select *from guestbook"; $result=mysql_query ($query); $allnums=mysql_num_rows($result);//Calculate the number of all records $numpage=ceil($allnums/$numcolumns);//The guestbook has a total of $numpage pages
$prev=($pagenum- 1)*$numcolumns; $next=$prev+$numcolumns;
if($next>=$allnums)
{ $next=$allnums; $numcolumns=$next-$prev; }//Process the $ of the last page prev,$next
$query="select *from guestbook order by time desc limit $prev,$next ";
$result=mysql_query($query); //Here is the guestbook page
for ($i= 1;$i{ $row=mysql_fetch_array($result);
//Show all message pages
----------
-Mobile reply: -According to the reply Person's ID number $id=$row['id']; $queryback="select *from gback where id=$id"; $resultback=mysql_query($queryback); $rowback=mysql_fetch_array($resultback); // Bamboo reply page echo $rowback['noteback'];//Review content echo $rowback['timeback'];//Reply time}//ecd for
-----------
Processing reply information
$c $db=mysql_select_db("dbname",$conn); $query="select * from phpempire"; $result=mysql_query($query); $row=mysql_fetch_array($result);
if ($password= =$row['password'])
{ $timeback=date("Y-m-d-H:i:s"); $query="insert into gback values('$noteback','$timeback','$id')" ; $result=mysql_query($query);
$message="Please wait...check all messages"; } else { $message="Sorry, only Mozhu can reply! "; }
echo $message; The empire is wonderful because of you
If the browser does not respond for a long time, please click the link here
Process message information:
$c $db=mysql_select_db("dbname",$conn); $ time=date("Y-m-d-H:i:s"); $ip=$REMOTE_ADDR; $query="select *from guestbook"; $result=mysql_query($query); $id=mysql_num_rows($result); $id++; $query="insert into guestbook values('$username','$city','$email','$homepage','$note','$ip','$time',$id)"; $ result=mysql_query($query);
Note: no3 Empire Guestbook
Function Introduction: Able to realize Bamboo reply, Bamboo authentication
Features: Simple structure, expandable functions
Disadvantages: Slow speed
This guestbook can be found at Http:/ /phpempire.net to see the running situation, if you are a little confused about some of the processes of this guestbook, please send me an email!
[The copyright of this article is jointly owned by the author and Oso.com. If you need to reprint, please indicate the author and Source]
The above introduces the process of making the Red Alert 2 Third Reich NO3 Third Reich guestbook, including the content of Red Alert 2 Third Reich. I hope it will be helpful to friends who are interested in PHP tutorials.

Thedifferencebetweenunset()andsession_destroy()isthatunset()clearsspecificsessionvariableswhilekeepingthesessionactive,whereassession_destroy()terminatestheentiresession.1)Useunset()toremovespecificsessionvariableswithoutaffectingthesession'soveralls

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Session in PHP is a mechanism for saving user data on the server side to maintain state between multiple requests. Specifically, 1) the session is started by the session_start() function, and data is stored and read through the $_SESSION super global array; 2) the session data is stored in the server's temporary files by default, but can be optimized through database or memory storage; 3) the session can be used to realize user login status tracking and shopping cart management functions; 4) Pay attention to the secure transmission and performance optimization of the session to ensure the security and efficiency of the application.

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Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.


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