<?php
$x = 5;
$y = 6
$water = $y-- $x--;
echo $water;
The result is 13 Not sure? Find the algorithm for operation = 13
##echo $water $paper;
?>
1
0
0
I said I had a similar question before, but the idea is actually the same. I hope it will be helpful to you
http://ipnx.cn/blog/detail/13861.html
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
