Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > php中限制一条，可多次循环时在累加

php中限制一条，可多次循环时在累加

WBOY
Release： 2016-06-20 12:47:08
Original
975 people have browsed it



循环中的循环明明是limit 0,1;可网页出现的却是累加的。


回复讨论(解决方案)

GetSubList  中 $str 是全局变量
只有 $str .= .... 并没有清除 $str 代码
所以在 GetList 的循环中 GetSubList 返回的是累加的结果
你只需去掉 $str 的全局声明就可以了

GetSubList  中 $str 是全局变量
只有 $str .= .... 并没有清除 $str 代码
所以在 GetList 的循环中 GetSubList 返回的是累加的结果
你只需去掉 $str 的全局声明就可以了


怎么去掉全局声明？

删掉 26 行

或改为 $str = '';

Related labels：
php中限制一条，可多次循环时在累加
source：php.cn
Previous article：PHP路由性能测试 Next article：15、PHP QR Code 条形码和二维码生成类库
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
3
2061
How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?
From 2024-04-23 00:22:19
0
11
2222
The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.
From 2024-04-19 15:37:47
0
1
1872
There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...
From 2024-04-18 23:52:34
0
1
1753
Where is the courseware about CSS mind mapping? Courseware
From 2024-04-16 10:10:18
0
0
1779
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template