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mqtt协议一般最大支持订阅几个主题？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...般几十到几百。以下来自AI的回答。
这是一个非常好的问题，但它没有一个简单的固定数字作为答案。MQTT协议规范本身并没有硬性规定一个客户端可以订阅主题的最大数量。这个限制主要取决于以下三个方面：MQTT代理（Broker...
求大佬解答 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
这种情况是什么问题啊大概率是由于屏幕名称不符合要求，请提供一下aia具体看看。
Runtime Error java.lang.NoSuchMethodError: No virtual method append(Lj...
....android.art/ javalib/core-oj.jar)
原因：过长的文本导致的问题，4w+汉字。
炫酷导航条，跟着b站教学，用ai伴侣测试，不显示图标，切换正常。 - App In...
炫酷导航条，跟着b站教学，用ai伴侣测试，不显示图标，切换正常。大神们帮忙看下会是哪里的问题
NodeJS: Saving a base64-encoded image to disk
...
UPDATE
I found this interesting link how to solve your problem in PHP. I think you forgot to replace space by +as shown in the link.
I took this circle from http://images-mediawiki-sites.thefullwiki.org/04/1/7/5/6204600836255205.png as sample which looks like:
Next I put it through htt...
HTML5 Pre-resize images before uploading
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How do you handle the PHP part of it after you add it to the FormData()? You wouldn't be looking for $_FILES['name']['tmp_name'][$i], for example? I'm trying if(isset($_POST['image']))... but the dataurl not there.
– denikov
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How to write a cron that will run a script every day at midnight?
...ub application records
00 23 * * * someuser /opt/myapp/bin/scrubrecords.php
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Listing only directories in UNIX
...y, even if the -F option of ls isn't used. Similar to the behaviour of ls *php and how it displays all files ending with php in a directory.
– David Hancock
Oct 18 '13 at 15:24
3
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Https Connection Android
... add the trusted certs in your own keystore.
http://blog.antoine.li/index.php/2010/10/android-trusting-ssl-certificates/
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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...制数据
【数据库】LeanDB 数据库扩展
【数据库】MySQL + php后端数据库
【数据库】MongoDB + php后端数据库
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