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New self vs. new static
I am converting a PHP 5.3 library to work on PHP 5.2. The main thing standing in my way is the use of late static binding like return new static($options); , if I convert this to return new self($options) will I get the same results?
...
Sort array of objects by object fields
...ond argument. Here are some examples:
Using anonymous functions (from PHP 5.3)
usort($your_data, function($a, $b) {return strcmp($a->name, $b->name);});
From inside a class
usort($your_data, array($this, "cmp")); // "cmp" should be a method in the class
Using arrow functions (from PHP...
PHP array_filter with arguments
...
if you a using php 5.3 and above, you can use closure to simplify your code:
$NUM = 5;
$items = array(1, 4, 5, 8, 0, 6);
$filteredItems = array_filter($items, function($elem) use($NUM){
return $elem < $NUM;
});
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How do I Sort a Multidimensional Array in PHP [duplicate]
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Introducing: a very generalized solution for PHP 5.3+
I 'd like to add my own solution here, since it offers features that other answers do not.
Specifically, advantages of this solution include:
It's reusable: you specify the sort column as a variable instead of hardco...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
这几天系统地学习了一下Lua这个脚本语言，Lua脚本是一个很轻量级的脚本，也是号称性能最高的脚本，用在很多需要性能的地方，比如：游戏脚本，nginx，wireshark的脚本，当你把他的源码下下来编译后，你会发现解释器居然不到2...
Creating the Singleton design pattern in PHP5
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PHP 5.3 allows the creation of an inheritable Singleton class via late static binding:
class Singleton
{
protected static $instance = null;
protected function __construct()
{
//Thou shalt not construct that ...
How do I get the find command to print out the file size with the file name?
...aris 10:
% find . -name '*.ear' -exec ls -lh {} \; | awk '{print $5, $9}'
5.3M ./dir1/dir2/earFile2.ear
5.3M ./dir1/dir2/earFile3.ear
5.3M ./dir1/dir2/earFile1.ear
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从 !important 到关于叹号的 !一切 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有个人也提了类似的问题：“为什么 CSS 和 C-based （的）语言中叹号的涵义相反？”他还问道：“除了 CSS，还有什么语言是用叹号表达肯定而非否定的呢？”（随后有人提醒他，自然语言就是其中一种…） 回答很有趣，是这样...
Discuz! X3 论坛标题字数突破80的限制 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...部分被剪切掉了，特别是一些用户发送一些英文或其他其语言的文章的时候标题说甚至...当一些用户发布帖子的时候 标题要是超过了80个字符超出的部分被剪切掉了，特别是一些用户发送一些英文或其他其语言的文章的时候标题...
Docker can't connect to docker daemon
...-vm755 <(curl -L https://github.com/docker/machine/releases/download/v0.5.3/docker-machine_linux-amd64) $HOME/bin/docker-machine
global:
sudo bash -c 'install -vm755 <(curl -L https://github.com/docker/machine/releases/download/v0.5.3/docker-machine_linux-amd64) /usr/local/bin/docker-machine...