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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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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)
share
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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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马无夜草不肥——聊聊程序员接私活的那些坑 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，经常遇到是否能1000块开发出一个像淘宝那样的网站的问题，自身价值分分钟被贬低，差点被气得一口老血喷涌而出。
靠同学、朋友、同事介绍的渠道通常性价比要高，但有可以抱的大腿少哇。
二. 谈钱伤感情，不谈钱伤身...
How to do error logging in CodeIgniter (PHP)
I want error logging in PHP CodeIgniter. How do I enable error logging?
5 Answers
5
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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?
8 Answers
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How to set a cookie for another domain
...get b.com to set the cookie. If a.com redirect the user to b.com/setcookie.php?c=value
The setcookie script could contain the following to set the cookie and redirect to the correct page on b.com
<?php
setcookie('a', $_GET['c']);
header("Location: b.com/landingpage.php");
?>
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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...升级、增加机器，但有些时候光是增加机器已经解决不了问题了，就算增加机器也不是短时间能够解决的，需要考虑分布式、客户预算、问题解决的容忍时间？头大时候要相信人类的智慧是无穷的，泡杯茶，听下轻音乐：）畅想...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...直到有一天，我们碰到了传统的关系型数据库无法解决的问题——全属性选择器（如图5所示）。
图5 全属性选择器
这是一个非常典型的例子。为了说明问题，我们仍然以关系型数据库的思路来描述。对于笔记本电脑这个类...