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一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...事的方式，逐步告诉大家比特币提出的动机、解决了什么问题以及一些关键组件的目标和设计方案。
问题的提出
我们先从比特币产生的动机开始。
以物易物的比特村
话说在这个世界上，有一个叫比特村的小村庄，村庄共有...
How do you use bcrypt for hashing passwords in PHP?
Every now and then I hear the advice "Use bcrypt for storing passwords in PHP, bcrypt rules".
11 Answers
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What is the use of the @ symbol in PHP?
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It suppresses error messages — see Error Control Operators in the PHP manual.
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List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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PHP global in functions
...alVariablesAreBad
How is testing the registry pattern or singleton hard in PHP?
Flaw: Brittle Global State & Singletons
static considered harmful
Why Singletons have no use in PHP
SOLID (object-oriented design)
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Performance of foreach, array_map with lambda and array_map with static function
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FWIW, I just did the benchmark since poster didn't do it. Running on PHP 5.3.10 + XDebug.
UPDATE 2015-01-22 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
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Unable to find the wrapper “https” - did you forget to enable it when you configured PHP?
...being said I'll list out exactly everything I've done so far. I am running PHP 5.2.14 with Zend Debugging on the latest Eclipse version on my Windows XP computer. I have a 1 GB of RAM. I have XAMPP running with Apache, MySQL, and FileZilla installed.
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How to do error logging in CodeIgniter (PHP)
I want error logging in PHP CodeIgniter. How do I enable error logging?
5 Answers
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What's the maximum value for an int in PHP?
... work with very big numbers, what's the largest int value you can store in PHP?
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java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...存在于什么地方?3缓存有哪些属性?4缓存介质?搞清楚这4个问题,那么我们就可以随意的通过应用的场景来判断使用何...1、缓存为什么要存在？
2、缓存可以存在于什么地方？
3、缓存有哪些属性？
4、缓存介质？
搞清楚这4个...