nikic

Why objects (usually) use less memory than arrays in PHP

This is just a small post in response to [this tweet][tweet] by Julien Pauli (who by the way is the release manager for PHP 5.5). In the tweet he claims that objects use more memory than arrays in PHP. Even though it can be like that, it's not true in most cases. (Note: This only applies to PHP 5.4 or newer.)

The reason why it's easy to assume that objects are larger than arrays is because objects can be seen as an array of properties and a bit of additional information (like the class it belongs to). And as array + additional info > array it obviously follows that objects are larger. The thing is that in most cases PHP can optimize the array part of it away. So how does that work?

The key here is that objects usually have a predefined set of keys, whereas arrays don't:

octocat

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

magnetikonline

Nginx FastCGI response buffer sizes

By default when Nginx starts receiving a response from a FastCGI backend (such as PHP-FPM) it will buffer the response in memory before delivering it to the client. Any response larger than the set buffer size is saved to a temporary file on disk.

This process is outlined at the Nginx ngx_http_fastcgi_module page manual page.

• Introduction
• Determine actual FastCGI response sizes
• Setting the buffer size
• Verifying results

garbados

1. There are two and only two genders.
2. Okay, then there are two and only two biological genders.
3. Gender is determined solely by biology.
4. Okay, it’s mostly determined by biology, right?
5. Please tell me it’s determined by DNA.
6. Gender can be reliably determined through visual means. After all, no man would ever wear a burka.
7. Once gender is set, it never changes.
8. Even if the gender can change, it will only change from the one value to the other value.
9. Only one gender can be “active” at the same time.
10. We’re tracking gender now, so we’ve always tracked it.

psayre23

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

m1st0

#!/bin/bash

# PHP 8 Compile #
# Author: Maulik Mistry
# Please share support: https://www.paypal.com/paypalme/m1st0
# References:
#   http://www.zimuel.it/install-php-7/
#   http://www.hashbangcode.com/blog/compiling-and-installing-php7-ubuntu
#   root-talis https://gist.github.com/root-talis/40c4936bf0287237839ccd3fdfdaec28
#

SoftCreatR

// ==UserScript==
// @name         Shopstopper
// @namespace    https://www.softcreatr.de
// @version      0.2
// @description  Reminds you, that you already bought this product (if you did...)
// @author       Sascha "SoftCreatR" Greuel
// @match        https://pluginstore.woltlab.com/file/*
// @grant        none
// ==/UserScript==

fevangelou

# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
#
# by Fotis Evangelou, developer of Engintron (engintron.com)
#
# ~ Updated December 2021 ~
#
#
# The settings provided below are a starting point for a 8-16 GB RAM server with 4-8 CPU cores.
# If you have different resources available you should adjust accordingly to save CPU, RAM & disk I/O usage.
#

atoponce

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

cstroe

A distilled list of open-source CRM software

Source: https://opensource.com/business/16/2/top-6-open-source-crm-tools-2016 + community contributions

EspoCRM `github.com/espocrm/espocrm`_ PHP https://www.espocrm.com