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大数据时代的数据化运营 - 资讯 - 清泛网 - 专注C/C++及内核技术
...下，我们在运营中看到可以获得有效数据的原始数据不是问题，去除无效和虚假的数据才是关键。
相信做发行的同行都知道，在实践中，会遇到通过某些渠道或者是CPS，或者是广告渠道，他们一定会有大量的虚假的数据在里面...
How do I remove the last comma from a string using PHP?
... I like this answer in particular, because one of the issues with a lot of PHP built-in functions, is that some of them are void, and some of them have return types. In this case, I was trying to just write rtrim($string, ','), when I should be writing $string = rtrim($string, ',');
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How to convert JSON string to array
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@RahulMehta If you're using PHP's built-in json_decode() it will return NULL if your JSON is invalid (for example, no quoted keys). That's what the documentation says and that's what my PHP 5.2 installation returns. Are you using a function other than...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...于处理文件系统操作的库，这一直是 C++ 语言存在的一个问题。过去，程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用的 C++ 接口来促进文件系统操作的库：Boost Filesystem Library。
创建与...
How to post JSON to PHP with curl
...ve been trying all afternoon to run the curl post command in this recess PHP framework tutorial. What I don't understand is how is PHP supposed to interpret my POST, it always comes up as an empty array.
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PDO MySQL扩展模块 检测通不过？ - PHP - 清泛IT论坛，有思想、有深度
php.in中下面两行已经放开注释：
extension=pdo.so
extension=pdo_mysql.so
PDO检测仍然通不过。
终极解决方案：
php编译时加上如下参数，重新编译安装php：
--with-pdo-mysql
php编译安装完整参数请参见：http://www.tsingfun.com/html/2015/env_0826...
PHP: How to handle
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No, PHP skips CDATA completely for some reason. Any other ideas?
– Angelo
Jun 4 '10 at 0:24
4
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LR性能指标解释 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...深入地分析网站上那些下载很慢的图形或中断的连接等有问题的
元素。
1、Web Page Breakdown（页面分解总图）
"页面分解"显示某一具体事务在测试过程的响应情况，进而分析相关的事务运行是否正常。
"页面分解"图可以按下面...
How to benchmark efficiency of PHP script
I want to know what is the best way to benchmark my PHP scripts. Does not matter if a cron job, or webpage or web service.
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What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...