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php 获取操作系统、浏览器版本信息（持续更新） - 更多技术 - 清泛网 - 专...
php 获取操作系统、浏览器版本信息（持续更新）有时我们需要在服务器端收集用户操作系统版本，以及用户使用何种浏览器等信息，本文主要提供getOS、getBrowser、getBrowserVer三个方法，对网上各方法进行测试汇总整理，持续更新...
PHP的函数前加上“@”的作用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
PHP的函数前加上“@”的作用@是PHP提供的错误信息屏蔽的专用符号。比如在一个函数前使用@@mysql_query 不会出现Warning，而原来mysql_query 在遇到错误时会在页面上访提示Warning。@是PHP提供的错误信息屏蔽的专用符号。
比如在一个函...
js/php判断终端类型：PC访问、手机访问、微信访问 - 更多技术 - 清泛网 - ...
js/php判断终端类型：PC访问、手机访问、微信访问一般也可以在前端用js来判断访问终端，代码如下：<script>function GetQueryString(name) { var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); v 一般也可以在前端用js来判断访问终端，代码...
App Inventor 2 如何连接MySQL数据库（阿里云数据库） · App Inventor 2 中文网
...接MySQL数据库
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由于阿里数据库（Oceanbase）完全兼容 MySQL，因此这里探讨的就是怎么连MySQL。
App Inventor 2 如何连接MySQL数据库
首先，App Inventor 2 并没有提供直接连...
Regex - how to match everything except a particular pattern
...
i think the last regex would also not match 009, 019... etc
– Sebastian Viereck
Sep 26 '13 at 10:03
1
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PHP Get all subdirectories of a given directory
... if($file->isDir()) {
echo strtoupper($file->getRealpath()), PHP_EOL;
}
}
Replace strtoupper with your desired function.
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How to Flatten a Multidimensional Array?
Is it possible, in PHP, to flatten a (bi/multi)dimensional array without using recursion or references?
29 Answers
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When to use single quotes, double quotes, and backticks in MySQL
...delimiter in date strings.
So using your example, I would double-quote the PHP string and use single quotes on the values 'val1', 'val2'. NULL is a MySQL keyword, and a special (non)-value, and is therefore unquoted.
None of these table or column identifiers are reserved words or make use of charac...
MySQL: determine which database is selected?
... currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
...
Alternative to iFrames with HTML5
...blocks, better manage dependencies to avoid redundancy, code organization, etc. Here is a trivial example:
<!-- Resources on other origins must be CORS-enabled. -->
<link rel="import" href="http://example.com/elements.html">
Native compatibility is still an issue, but you can use a p...