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In the blink of an eye, it’s the end of the month again, and it’s time to start writing work summaries again. In fact, it wasn't a big deal. It was just that a sudden power outage in the company "cut off" all my files and I didn't have time to back them up. Of course I am not the only one who suffered the disaster, but one colleague luckily escaped this disaster mainly because he used file backup software. In fact, I have the awareness that I need to back up, but I just don’t think it is trustworthy, so I have never used it. But after this time, I had to install a backup software to back up files. But with so many software on the market, which one is suitable for me, I still have to ask for advice. A colleague told me to use Multiple Backup to back up files. The name is quite easy to remember. Since he said so, I decided to give it a try. When I open their official website (dbfen.com), the first impression is quite good, it is simple and fresh. After browsing their official website, I felt that it was quite reliable, and I was a little excited when I saw the four characters "Free Trial". However, I am still a little worried about free software. After listening to my colleagues’ “use experience”, I feel that my worries are unnecessary. After logging in, click on the free trial and an option box will pop up 
What I needed was local backup, so I chose [Protect Desktop PC], and then directly downloaded the client for the Win system.
After downloading, you need to unzip it, and then click dbfen.exe to log in directly.
After selecting the file content that needs to be backed up, click [Finish] to start the backup
After the backup is completed, there will be a prompt that the backup was successful. It doesn't matter if you accidentally close the web page during the process. The task will not stop here. If you need an email reminder, you can also choose it. In the lower left corner of the page, click [Settings] and fill in the email address for receiving email reminders.
Then when you need to restore it one day, just click to restore it to the folder you need.
Now I can finally breathe a sigh of relief. I won’t be afraid of power outages in the future. I still need to do a good job of backing up! Who else doesn’t have the habit of backing up files? I suggest you use more backups. Back up more and worry less! |
How can you check if a PHP session has already started?Apr 30, 2025 am 12:20 AMIn PHP, you can use session_status() or session_id() to check whether the session has started. 1) Use the session_status() function. If PHP_SESSION_ACTIVE is returned, the session has been started. 2) Use the session_id() function, if a non-empty string is returned, the session has been started. Both methods can effectively check the session state, and choosing which method to use depends on the PHP version and personal preferences.
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Are there any alternatives to PHP sessions?Apr 29, 2025 am 12:36 AMAlternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching
Define the term 'session hijacking' in the context of PHP.Apr 29, 2025 am 12:33 AMSessionhijacking refers to an attacker impersonating a user by obtaining the user's sessionID. Prevention methods include: 1) encrypting communication using HTTPS; 2) verifying the source of the sessionID; 3) using a secure sessionID generation algorithm; 4) regularly updating the sessionID.
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