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Detect Browser Language in PHP
...[^,\d]+([\d.]+))?~', strtolower($http_accept_language), $matches, PREG_SET_ORDER);
foreach($matches as $match) {
list($a, $b) = explode('-', $match[1]) + array('', '');
$value = isset($match[2]) ? (float) $match[2] : 1.0;
if(isset($available_languages[$match[1]])) {
...
Why use sprintf function in PHP?
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You can also repeat and reorder the arguments to display. e.g. sprintf('%2$s %1$s, my name is also %1$s.', 'World', 'Hello'); resulting in Hello World, my name is also World.
– Will B.
May 17 '17 at 1:41
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getenv() vs. $_ENV in PHP
...$_ENV is not always populated due to different configurations of variables_order so it's best if you avoid $_ENV if you don't control the server configuration.
So, for the most portable PHP code:
Use getenv.
Use the correct case for the environment variable name.
...
理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...经常死机，登陆到终端看了一下，都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉，还有位客户抱怨 VPS 经常死机，登陆到终端看了一下，都是常见的 Out of memory 问...
How to get current PHP page name [duplicate]
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
OpenSSH升级后不能登录的问题升级OPENSSH 遇到头疼的问题Openssh 爆出很多安全漏洞，客户那边搞安全检查，扫描结果出来了，漏洞基本都是在openssh上面于是打算升级升...升级OPENSSH 遇到头疼的问题
Openssh 爆出很多安全漏洞，客...
How to add a new method to a php object on the fly?
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Using simply __call in order to allow adding new methods at runtime has the major drawback that those methods cannot use the $this instance reference.
Everything work great, till the added methods don't use $this in the code.
class AnObj extends s...
PHP Function Comments
...ription and
* the start of the @tags. Wrap comments before 80 columns in order to
* ease readability for a wide variety of users.
*
* Docblocks can only be used for programming constructs which allow them
* (classes, properties, methods, defines, includes, globals). See the
* phpDocumentor d...
浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一本书上（包括老师）也不会给你为什么是-128~127，这个问题貌似看起来也很简单容易， 以至于不用去思考为什么，不是有一个整型范围的公式吗： -2^(n-1)~2^(n-1)-1 n为整型的内存占用位数，所以int类型32位 那么就是 -(2^31)~2^31 -...
Test PHP headers with PHPUnit
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I had a more radical solution, in order to use $_SESSION inside my tested/included files.
I edited one of the PHPUnit files at ../PHPUnit/Utils/Printer.php to have a "session_start();" before the command "print $buffer".
It worked for me like a charm. But I...