I'm curious about how the website was tampered with. who said the website statistics were tampered?-php Tutorial

Source: Internet
Author: User
I'm curious about how the website was tampered with. who said the website statistics were tampered with? This post was last edited by xjl756213616 at 09:16:19, January 22 ,?

The number of statistics has been changed.
Originally, more than 3650 million
It was changed to more than 50. it was changed at this morning. it looks like the IP address in Guangdong and Shenzhen.




The code is as follows:
 


Reply to discussion (solution)

1. programs can be used to download arbitrary files.

2. text counters. after reading the data, you may write data first from modifying the data to writing data, which leads to inaccurate data.

$ Num = file_get_contents ("./num. dat ");
$ Num = (int) ($ num) + 1;
File_put_contents ("./num. dat", $ num );

Do I need to lock the Write file? Data will inevitably be lost due to concurrency

Use a database. More accurate

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