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how to check and set max_allowed_packet mysql variable [duplicate]
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max_allowed_packet
is set in mysql config, not on php side
[mysqld]
max_allowed_packet=16M
You can see it's curent value in mysql like this:
SHOW VARIABLES LIKE 'max_allowed_packet';
You can try to change it like this, but it's unlikely this will work on shared hostin...
MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...泄露告警或控制石油管道阀门的命令，就必须要在网络有问题的情况下也要能确保发送成功。
myriota这家提供物联网数据LEO卫星传输服务的公司，流量报价是1M字节的数据500美元/月。因此，每次传输节省几个字节也能省不少...
How to pass parameters in GET requests with jQuery
...ng to handle error
}
});
And you can get the data by (if you are using PHP)
$_GET['ajaxid'] //gives 4
$_GET['UserID'] //gives you the sent userid
In aspx, I believe it is (might be wrong)
Request.QueryString["ajaxid"].ToString();
...
How to escape a JSON string to have it in a URL?
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Using encodeURIComponent():
var url = 'index.php?data='+encodeURIComponent(JSON.stringify({"json":[{"j":"son"}]})),
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MFC MDI程序的窗口菜单无法正确显示 - C/C++ - 清泛网 - 专注C/C++及内核技术
MFC MDI程序的窗口菜单无法正确显示问题的原因，是自己创建的菜单资源中没有任何一个子菜单被mfc框架认为是window子菜单，因此也就没有响应修改子菜单的内容。mfc的判断标准其...问题的原因，是自己创建的菜单资源中没有任...
oracle:完整剖析PL/SQL DEVELOPER与SQL PLUS字符集设置 - 数据库(内核) - ...
...设置提要：本文重点剖析PL SQL DEVELOPER与SQL PLUS字符集设置问题，对两者的中文数据写入、读取之间整个流程做描述，抛砖引玉。工作后要保持...提要：本文重点剖析PL/SQL DEVELOPER与SQL PLUS字符集设置问题，对两者的中文数据写入、...
从 !important 到关于叹号的 !一切 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的人当然不只我一个，stackoverflow 上有个人也提了类似的问题：“为什么 CSS 和 C-based （的）语言中叹号的涵义相反？”他还问道：“除了 CSS，还有什么语言是用叹号表达肯定而非否定的呢？”（随后有人提醒他，自然语言就是...
Path of assets in CSS files in Symfony 2
...ombinations on the same twig, and this route was launched from
"/app_dev.php/"
"/app.php/"
and "/"
thus giving 14 x 3 = 42 tests.
Additionally, all this has been tested working in a subdirectory, so there is no way to fool by giving absolute URLs because they would simply not work.
The tests w...
汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...，所以我们不得不先了解一下CPU和内存：（关于数的进制问题在此不提）
ＣＰＵ是可以执行电脑所有算术╱逻辑运算与基本 I/O 控制功能的一块芯片。一种汇编语言只能用于特定的CPU。也就是说，不同的CPU其汇编语言的指...
What is 'YTowOnt9'?
Our (PHP) framework sometimes renders hidden inputs with value YTowOnt9 . I can't find that string anywhere in the (huge) codebase, and can't figure out where it came from. I decided to Google for that particular string, and the result surprised me. Over half a million - kind of random - hits. I ...