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Sort Multidimensional Array by Value

CategoriesBack End, Development, PHP
$list = Array
(
    [0] => Array
        (
            [lat] => '43.65529'
            [lng] => '-79.38397'
            [name] => 'Name'
        )
    [1] => Array
        (
            [lat] => '43.65328'
            [lng] => '-79.37947'
            [name] => 'Name'
        )
    [2] => Array
        (
            [lat] => '43.65516'
            [lng] => '-79.38892'
            [name] => 'Name'
        )
)

Sort with latitude going smallest to largest with longitude also going smallest to largest after

array_multisort(
	array_column($list, 'lat'), SORT_ASC, 
	array_column($list, 'lng'), SORT_ASC,
	$row
);

Array now looks like this

Array
(
    [0] => Array
        (
            [lat] => '43.65328'
            [lng] => '-79.37947'
            [name] => 'Name'
        )
    [1] => Array
        (
            [lat] => '43.65516'
            [lng] => '-79.38892'
            [name] => 'Name'
        )
    [2] => Array
        (
            [lat] => '43.65529'
            [lng] => '-79.38397'
            [name] => 'Name'
        )
)
Posted on

Create JSX Project

CategoriesDevelopment, Front End, ReactJS

Create React folder in www with this code:

# Create a project folder
mkdir jsx-modules
cd jsx-modules

# Create an npm project without prompts (-y)
npm init -y

# Install babel
npm install @babel/cli @babel/core @babel/plugin-transform-react-jsx

Next we’ll need a .babelrc which will tell babel how to process our jsx.

{
  "plugins": [
    ["@babel/plugin-transform-react-jsx", { "pragma": "createElement", "pragmaFrag": "'fragment'" }]
  ],
  "comments": false
}

And then add an index.jsx file

// A jsx pragma method to create html dom elements
function createElement(tag, props, ...children) {
	if (typeof tag === "function") return tag(props, children)
	const element = document.createElement(tag)

	Object.entries(props || {}).forEach(([name, value]) => {
		if (name.startsWith('on') && name.toLowerCase() in window)
			element.addEventListener(name.toLowerCase().substr(2), value)
		else element.setAttribute(name, value.toString())
	})

	children.forEach((child) => {
		appendChild(element, child)
	})

	return element
}
const appendChild = (parent, child) => {
	if (Array.isArray(child))
		child.forEach((nestedChild) => appendChild(parent, nestedChild))
	else
		parent.appendChild(
			child.nodeType ? child : document.createTextNode(child)
		)
}
const createFragment = (props, ...children) => {
	return children
}

// Setup some data
const name = 'Geoff'
const friends = ['Sarah', 'James', 'Hercule']

// Create some dom elements
const app = (
  <div className="app">
    <h1 className="title"> Hello, world! </h1>
    <p> Welcome back, {name} </p>
    <p>
      <strong>Your friends are:</strong>
    </p>
    <ul>
      {friends.map(name => (
        <li>{name}</li>
      ))}
    </ul>
  </div>
)

// Render our dom elements
window.document.getElementById('app').replaceWith(app)

Now you can run this command to generate your javascript.

npx babel index.jsx -d dist

Which will create a new dist/index.js file with the transpilled code.

You can add // eslint-disable-next-line no-unused-vars to ignore annoying eslint errors

And to test our code, add an index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>jsx WITHOUT react</title>
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/gh/kognise/water.css@latest/dist/light.min.css"
    />
  </head>
  <body>
    <div id="app"></div>
    <script src="dist/index.js"></script>
  </body>
</html>

I snuck in water.css to make raw html prettier.

Posted on

Create React Project

CategoriesDevelopment, Front End, ReactJS

Create React folder in www with this code:

npx create-react-app react-modules

Once all the necessary files are installed, change directory into react-modules and start the application with:

npm start

Build the files ready to go to production:

npm build


We are creating buttons that open a modal window where the content of the modal window changes with each button.

Add this line to dependencies in package.json

"axios": "^0.24.0",

Update packages with this command: npm update

Open App.js

import React from "react";
import axios from "axios";
import "./styles.css";
class App extends React.Component {
	state = {
		show: false,
		content: "",
		title: "",
	};
	removeHTML(string){
		const regex = /(<([^>]+)>)/ig;
		const result = string.replace(regex, '');
		return result;
	}
	showModal = getContent => {
		if (typeof getContent === 'string' || getContent instanceof String){
			axios({
				method: "get",
				url: "http://api.tvmaze.com/search/shows?q="+getContent,
			}).then((response) => {
				let movies = response.data;
				let match = false;
				{movies.map((movie,i) => {
					if( movie.show.language === "English" && match === false ){
						match = true;
						this.setState({
							title: movie.show.name,
							content: this.removeHTML(movie.show.summary)
						});
					}
				})}
			}, (error) => {
				console.log(error);
			});
		}else{
			this.setState({
				content: "",
				title: "",
			});
		}
		this.setState({
			show: !this.state.show
		});
	};
	render() {
		return (
			<div className="App">
				<button
					className="toggle-button centered-toggle-button"
					onClick={e => {
						this.showModal("The Golden Girls");
					}}
				>
					Golden Girls
				</button>
				<button
					className="toggle-button centered-toggle-button"
					onClick={e => {
						this.showModal("Jane The Virgin");
					}}
				>
					Jane The Virgin
				</button>
				{this.state.show && (
					<div className="modal" id="modal">
						<h2>{this.state.title}</h2>
						<div className="content">
							{this.state.content}
						</div>
						<div className="actions">
						  <button className="toggle-button" onClick={this.showModal}>
							close
						  </button>
						</div>
					</div>
				)}
			</div>
		);
	}
}
export default App;

Add modal css to styles.css

.App {
  font-family: sans-serif;
  text-align: center;
}
.modal {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: white;
  border: 1px solid #ccc;
  transition: 1.1s ease-out;
  box-shadow: -2rem 2rem 2rem rgba(0, 0, 0, 0.2);
}
.modal h2 {
  border-bottom: 1px solid #ccc;
  padding: 1rem;
  margin: 0;
}
.modal .content {
  padding: 1rem;
}
.modal .actions {
  border-top: 1px solid #ccc;
  background: #eee;
  padding: 0.5rem 1rem;
}
.modal .actions button {
  border: 0;
  background: #78f89f;
  border-radius: 5px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  line-height: 1;
}
button.centered-toggle-button {
  margin: 0 10px;
}
button {
	cursor: pointer;
}
Posted on

WordPress Data Sanitization/Escaping

CategoriesBack End, Development, WordPress Functions and Hooks

Sanitization: Securing Input

Sanitization is the process of cleaning or filtering your input data. Whether the data is from a user or an API or web service, you use sanitizing when you don’t know what to expect or you don’t want to be strict with data validation.

The easiest way to sanitize data is with built-in WordPress functions.

The sanitize_*() series of helper functions provide an effective way to ensure you’re ending up with safe data, and they require minimal effort on your part: