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how to check and set max_allowed_packet mysql variable [duplicate]
...
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 我是新手 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 我是新手 麻烦你了
新手的话，建议先跟着教程做...
Turn off deprecated errors in PHP 5.3
My server is running PHP 5.3 and my WordPress install is spitting these errors out on me, causing my session_start() to break.
...
快速开发CSS的利器LESS 系列教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...标签样式当中，但是如果出现在多个地方，就很容易出现问题，在书写的时候就会变得很麻烦。为了便于这个操作，我们可以将一个样式放在另一个样式当中。如：
.text-overflow {
display:block;/*内联对象需加*/
word-break:keep-...
Convert a PHP script into a stand-alone windows executable
I want to automate a fairly simple task. For this I have written a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
...
Unexpected Caching of AJAX results in IE8
...reventing IE from caching the response.
Note that if you have other Ajax calls going on where you do want caching, this will disable it for those too. In that case, switch to using the $.ajax() method and enable that option explicitly for the necessary requests.
See http://docs.jquery.com/Ajax/jQu...
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...
Disabling Strict Standards in PHP 5.4
...to this I was running my site on 5.3.8. Unfortunately, php 5.4 combines E_ALL and E_STRICT , which means that my previous setting for error_reporting does not work now. My previous value was E_ALL & ~E_NOTICE & ~E_STRICT Should I just enable values one at a time?
...
互联网健身的火爆：技术驱动是内因 资本只是点缀 - 资讯 - 清泛网 - 专注C/...
...候，到底是要抓大放小，还是要抓小放大，这的确是一个问题。资本寒冬到来，很多行业的创业者们都在谋划着过冬的“最佳姿势”。尚未拿到融资的创业者们开始通过各种路演、投资峰会、宣讲会获取资本关注；已经拿到融资...
Pulse Secure解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ure解决方案概述一段时间以来，企业始终在面对接入控制问题。这个需求始自于扩展企业，在此，远程用户常使用未加管理或不可管理的设备接入关键的局域网...概述
一段时间以来，企业始终在面对接入控制问题。这个需求始...