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Source: https://github.com/bcit-ci/CodeIgniter/wiki/Compress-HTML-output

To remove useless whitespace from generated HTML, except for Javascript see [Regex Source] or just replace the $re value:

$re = '%# Collapse ws everywhere but in blacklisted elements.
        (?>             # Match all whitespaces other than single space.
          [^\S ]\s*     # Either one [\t\r\n\f\v] and zero or more ws,
        | \s{2,}        # or two or more consecutive-any-whitespace.
        ) # Note: The remaining regex consumes no text at all...

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See

• https://en.wikipedia.org/wiki/Great-circle_distance#Formulas
• http://www.geodatasource.com/developers/php
• http://www.codexworld.com/distance-between-two-addresses-google-maps-api-php/
• https://stackoverflow.com/questions/10053358/measuring-the-distance-between-two-coordinates-in-php

JavaScript

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Parse Link Header

• http://tools.ietf.org/html/rfc5988
• https://developer.github.com/v3/#pagination
• https://gist.github.com/niallo/3109252

JavaScript

function parse_link_header(header) {

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<?php
/**
 * @author   Natan Felles <natanfelles@gmail.com>
 */
defined('BASEPATH') or exit('No direct script access allowed');

/**
 * Class Access
 */
class Access extends CI_Controller {

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Install xdebug extension

# Download stable release of xdebug from https://xdebug.org/download.php
wget -c "https://xdebug.org/files/xdebug-2.5.3.tgz"
# Extract archive
tar -xf xdebug-2.5.3.tgz

cd xdebug-2.5.3/

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<?xml version="1.0" encoding="UTF-8"?>

<style-scheme id="darcula" _name="Darcula" version="1.0">
	<author>Sash0k</author>
	<_description>Dark color scheme using IntelliJ IDEA colors</_description>

<!-- Scribe Theme Generator 1.3 -->

<!-- COLORS -->
	<color name="comment_color" value="#629755"/>

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# Location: /etc/nginx/sites-available/domain.tld.conf
server {
	listen 80;

	# listen 443 ssl;
	# include snippets/snakeoil.conf;

	root /var/www/domain.tld/public;

	index index.html index.php;

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<?php
/**
 * @param string $content
 *
 * @return string
 */
function purify(string $content) : string
{
	$config = \HTMLPurifier_Config::createDefault();
	$config->set('HTML.AllowedElements', [

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Atom PHP Environment + CodeIgniter 3 & 4

Install

Download and install Atom Editor:

cd ~/Downloads

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<?php
/**
 * @author   Natan Felles <natanfelles@gmail.com>
 */
defined('BASEPATH') OR exit('No direct script access allowed');

if ( ! function_exists('add_foreign_key'))
{
	/**
	 * @param string $table       Table name