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Modbus硬件控制01——什么是Modbus - 创客硬件开发 - 清泛IT社区，为创新赋能！
...再回复；如果不一样，说明你这个数据在传输的时候出了问题，数据不对的，所以就抛弃了。
2、实战只谈理论大家可能不太明白，下面举一个例子。Modbus-RTU协议一般我们用的最多功能码就是03和06，大部分都是用modbus来查询传...
How to install and run phpize
I have been meaning to install ffmpeg as an extension to my PHP setup. So before I can install it, I need to phpize it. I installed php5-dev by sudo apt-get install php5-dev . But now when I run phpize I get the following error :
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How can I get the SQL of a PreparedStatement?
...+
" SET" +
" manufacturer_id = ?," +
" name = ?," +
" sort_order=0;"
);
// 3. fill template
stmt.setInt(1, 23);
stmt.setString(2, 'Google');
// 4. print sql string
System.out.println(((JDBC4PreparedStatement)stmt).asSql());
So it returns smth like this:
INSERT INTO oc_manufacturer...
What tools to automatically inline CSS style to create email HTML code? [closed]
....com/css/ you learn that you need to embed inline styles in your HTML, in order for your email to be read in any mail client.
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What are the recommendations for html tag?
...t;/a>
where ${uri} basically translates to $_SERVER['REQUEST_URI'] in PHP, ${pageContext.request.requestURI} in JSP, and #{request.requestURI} in JSF. Noted should be that MVC frameworks like JSF have tags reducing all this boilerplate and removing the need for <base>. See also a.o. What ...
Can I use my existing git repo with openshift?
...lias here:
git remote add openshift -f <openshift-git-repo-url>
In order to then be able to push the code from your local git repo to openshift you first have to merge your openshift repo with your local bitbucket clone. You do that by issuing locally:
git merge openshift/master -s recursiv...
如何编写一个独立的 PHP 扩展（译） - 更多技术 - 清泛网 - 专注C/C++及内核技术
如何编写一个独立的 PHP 扩展（译）how-to-create-a-php-extension本文翻译自 PHP 源码中的 README.SELF-CONTAINED-EXTENSIONS。文中标记了注的内容均为自己添加。内容有点老，也挺啰嗦，没讲什么深入的...本文翻译自 PHP 源码中的 README.SELF-CONTAI...
PHP-FPM doesn't write to error log
I've just installed a nginx+php-fpm server. Everything seems fine except that PHP-FPM never writes error to its log.
11 Ans...
How to enable PHP short tags?
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Set
short_open_tag=On
in php.ini
And restart your Apache server.
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Laravel requires the Mcrypt PHP extension
...web enabled extensions and command line enabled extensions can differ. Run php -m in your terminal and check to see if mcrypt is listed. If it's not then check where the command line is loading your php.ini file from by running php --ini from your terminal.
In this php.ini file you can enable the e...