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为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...提交的仓库里。如果代码行数都计算在内的话，原本一个问题只需10行代码即可解决，程序员有可能编写5000行代码，来让功能更加灵活和兼容，这样，他的代码总量就会增加5000行了。
衡量生产力反而会使代码变的更糟，让项目...
How to determine the memory footprint (size) of a variable?
...libjudydebian1
sudo pecl install memprof
echo "extension=memprof.so" > /etc/php5/mods-available/memprof.ini
sudo php5enmod memprof
service apache2 restart
And then in my code:
<?php
memprof_enable();
// do your stuff
memprof_dump_callgrind(fopen("/tmp/callgrind.out", "w"));
Finally open the ...
Difference between require, include, require_once and include_once?
... a generic page layout that has sections such as headers, columns, footers etc. This allows me to serve that template for every page on the site and I only need to create files in the page folder structure defining what should go into each of those positions. If I decide that a page doesn't need a s...
Get the full URL in PHP
...VER_ADDR"] ???? 143.34.112.23
$_SERVER["SERVER_PORT"] ???? 80(or 443 etc..)
$_SERVER["REQUEST_SCHEME"] ???? https //similar: $_SERVER["SERVER_PROTOCOL"]
$_SERVER['HTTP_HOST'] ???? example.com (or with WWW) //similar: $_SERVER["E...
Can I try/catch a warning?
...bypass the error_reporting setting and pass all errors (notices, warnings, etc.) to your error handler. You can set a second argument on set_error_handler() to define which error types you want to receive, or access the current setting using ... = error_reporting() inside the error handler.
Suppres...
Reference: mod_rewrite, URL rewriting and “pretty links” explained
...e, returning specific HTTP status codes as responses, redirecting requests etc. It's very powerful and can be used to great good if you understand the fundamental HTTP request-response mechanism. It does not automatically make your links pretty.
See the official documentation for all the possible f...
Converting a UNIX Timestamp to Formatted Date String
... object. It provides excellent support for dates/times including timezones etc
– liquorvicar
Apr 6 '12 at 7:35
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Create subdomains on the fly with .htaccess (PHP)
...ne you can tell Apache to look at the right place, with directory hashing, etc.
For example, the line:
VirtualDocumentRoot /http/users/%3.1/%3.2/%3
would tell Apache to set the document root to /http/users/s/u/subdomain when requested for subdomain.yourdomain.c
Installing PDO driver on MySQL Linux server
...fter saving : sudo service apache2 restart . And my php.ini file path was /etc/php/7.0/apache2/php.ini (OS: Lubuntu 16.04, analogous to Ubuntu for these purposes). Run sudo gedit <fullpath> to edit it. (gedit or geany or any text editor on your system)
– Nikhil VJ
...
What is the function __construct used for?
...after it has been created, and is a good place to put initialisation code, etc.
class Person {
public function __construct() {
// Code called for each new Person we create
}
}
$person = new Person();
A constructor can accept parameters in the normal manner, which are passed whe...