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https://www.fun123.cn/reference/iot/UDP.html 

App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网

...设备标识符。然后,接收器会过滤掉它感兴趣的设备。 问题是:App Inventor 没有内置 UDP,而且我找不到可用的扩展。所以自己动手吧。 注意: 如果智能手机和远程站位于同一个(本地)网络中,则扩展可以完美运行。如果智...
https://bbs.tsingfun.com/thread-2966-1-1.html 

App Inventor 2 MultiImagePicker 拓展:实现图片/视频多选功能 - App Inve...

...帖、上传相册等场景)。MultiImagePicker 拓展完美解决这个问题。 一、拓展简介 MultiImagePicker 是 App Inventor 2 中文网提供的图片单选/多选扩展组件,主要功能: - 支持单选和多选图片 - 支持选择视频文件 - 长按图片即可一次...
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Creating PHP class instance with a string

...\Bar\MyClass'; $instance = new $class(); Other cool stuff you can do in php are: Variable variables: $personCount = 123; $varname = 'personCount'; echo $$varname; // echo's 123 And variable functions & methods. $func = 'my_function'; $func('param1'); // calls my_function('param1'); $meth...
https://www.tsingfun.com/it/tech/2240.html 

防挂马:apache禁止访问文件或目录执行权限、禁止运行脚本PHP文件的设置方...

... </FilesMatch> </Directory> 这些配置表面上看起来是没什么问题的,确实在windows下可以这么说。 但是Linux就不同了,大家都是知道的linux操作系统是区分大小写的,这里如果换成大写后缀名*.phP一类就pass了 这里我说下我个人的解...
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From inside of a Docker container, how do I connect to the localhost of the machine?

... Perfect if you want to use php xdebug on Windows 10 : ``` zend_extension = xdebug.so xdebug.default_enable = 0 xdebug.remote_enable = 1 xdebug.remote_connect_back = 0 xdebug.remote_host = host.docker.internal``` ...
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Fastest way to check if a string is JSON in PHP?

... It's worth noting that this works correctly in theory. Unfortunately PHP's json_decode function has a number of bugs, which will allow invalid JSON to be parsed in odd ways. isJson('0123') should return false because 0123 is not JSON, however isJson('123') should return true because 123 is JSO...
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How to match “any character” in regular expression?

...Escaping: Double escaping is not required for some languages such as, C#, PHP, Ruby, PERL, Python, JavaScript: [\s\S]* [\d\D]* [\w\W]* [\s\S]+ [\d\D]+ [\w\W]+ Test import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegularExpression{ public static void main(Stri...
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How to get parameters from a URL string?

...ery); echo $query['email']; If you want to get the $url dynamically with PHP, take a look at this question: Get the full URL in PHP share | improve this answer | follow ...
https://www.tsingfun.com/it/da... 

当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...掉防火墙改为直连,WINDOWS的IP改为 172.16.110.70/24 没有任何问题。故判断是防火墙的问题。 防火墙策略全开 允许UNTRUNT 到TRUNT ANY 结果还是不行。 开始百度 第一个说法:需要更改windows的注册表 \\HKEY_LOCAL_MACHINE\SOFTW...
https://bbs.tsingfun.com/thread-2818-1-1.html 

MQTT报文多个数据的提取 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!

...,结果是:75.45 要取其他项的 ... 上面关于MQTT的设置没问题了吗&nbsp;&nbsp;我是新手&nbsp;&nbsp;麻烦你了 dou454 发表于 2026-03-02 22:37 上面关于MQTT的设置没问题了吗&nbsp;&nbsp;我是新手&nbsp;&nbsp;麻烦你了 新手的话,建议先跟着教程做...