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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。
QRCodeGenerator 拓展：根据给定的文本生成二维码 · App Inventor 2 中文网
...+ js + Web浏览器 生成二维码的方案：https://puravidaapps.com/qr.php
aix拓展下载
cn.fun123.QRCodeGenerator.aix
demo下载
TestQRCodeGenerator.aia
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How can I edit a view using phpMyAdmin 3.2.4?
I need to simply edit a very complicated view in phpMyAdmin 3.2.4 but I cannot figure how to do that. Any suggestions?
Thanks!
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MySQL convert date string to Unix timestamp
...with MySQL:
http://www.epochconverter.com/programming/mysql-from-unixtime.php
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SQL selecting rows by most recent date
...ows by most recent date".
Modified from http://wiki.lessthandot.com/index.php/Returning_The_Maximum_Value_For_A_Row
SELECT t.chargeId, t.chargeType, t.serviceMonth FROM(
SELECT chargeId,MAX(serviceMonth) AS serviceMonth
FROM invoice
GROUP BY chargeId) x
JOIN invoice t ON x.charge...
Bash Templating: How to build configuration files from templates with Bash?
...m writing a script to automate creating configuration files for Apache and PHP for my own webserver. I don't want to use any GUIs like CPanel or ISPConfig.
...
How to redirect all HTTP requests to HTTPS
... http://www.example.com ) to HTTPS ( https://www.example.com ). I'm using PHP btw. Can I do this in .htaccess?
26 Answers
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Can you use a trailing comma in a JSON object?
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PHP coders may want to check out implode(). This takes an array joins it up using a string.
From the docs...
$array = array('lastname', 'email', 'phone');
echo implode(",", $array); // lastname,email,phone
...