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App Inventor 2 列表显示框能否实现多选功能？ - App Inventor 2 中文网 - ...
...现，不过是收费的，12美刀。
https://puravidaapps.com/combobox.php
请教一个有关WEB 客户端 1的问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...WEB 客户端 1 通过 URL将参数传输给下图中地址并调用一个PHP文件，但是出现了错误信息“ERROR 1101：unable to get a response with the specified url"
我直接通过浏览器传输，显示结果正确。借助WEB浏览框如下图所示那样，也获得正确结果。
...
App Inventor 2 QRCode 扩展：二维码扫描及生成方案都在这里 - App Invento...
1、QRCode 二维码扫码：
使用原生的“条码扫描器”组件：
2、二维码生成的方案：
html + js + Web浏览器 方案：https://puravidaapps.com/qr.php
QRCodeGenerator 拓展方案：https://community.appinventor.mi ... tor-extension/47908
能否详细说明下数据库的应用？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
不能直连MYSQL，但有个贴子给出了方案，用PHP做了个中间件转发，但根据贴子操作未成功。又发现自带了云数据库的组件，但说明太少，比如哪里有云数据库的提供商，或者云数据库如何私有部署，能否详细说说，我想很多人应...
一个组件怎么悬浮在另一个组件上面？ - App Inventor 2 拓展 - 清泛IT社区...
...做？或者是什么扩展能做到？https://puravidaapps.com/extensions.php
页面中搜索“floating”，有多款拓展，有的效果还很不错，后续会整理翻译中文。
How do servlets work? Instantiation, sessions, shared variables and multithreading
...guages which maintains the session by a cookie are sensitive as well, like PHP with PHPSESSID cookie, ASP.NET with ASP.NET_SessionID cookie, etcetera. That's also why URL rewriting with ;jsessionid=xxx as some JSP/Servlet MVC frameworks automatically do is frowned upon. Just make sure that session I...
A regular expression to exclude a word/string
...noreme3)
You can add as much ignored words as you like, here is a simple PHP implementation:
$ignoredWords = array('ignoreme', 'ignoreme2', 'ignoreme...');
preg_match('~^/\b([a-z0-9]+)\b(?<!' . implode('|', array_map('preg_quote', $ignoredWords)) . ')~i', $string);
...
What is the method for converting radians to degrees?
...rads -> x*pi/180
I guess if you wanted to make a function for this [in PHP]:
function convert($type, $num) {
if ($type == "rads") {
$result = $num*180/pi();
}
if ($type == "degs") {
$result = $num*pi()/180;
}
return $result;
}
Yes, that coul...
How to screenshot website in JavaScript client-side / how Google did it? (no need to access HDD) [du
...o get the outer HTML and pass it to GrabzIt's API.
– PHP Rocks
May 11 '18 at 10:34
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Infinity symbol with HTML
...ing Special Characters” section here might help: xvsxp.com/misc/keyboard.php
– Paul D. Waite
Feb 12 '10 at 21:07
I'm...