Author: David

I'm David, web designer/developer specializing in building functional websites using WordPress. I have strong skills in theme development using Hybrid Core framework and plugin development. It's okay if you want to hire me.

WordPress AJAX for Beginners


In recent projects I use AJAX more, and I think it’s time to share my knowledge. This tutorial is just a simple guide to understand the basic about using AJAX in WordPress.

To follow this tutorial you will need to understand the basic of:

  1. Simple jQuery / JavaScript
  2. Simple PHP
  3. How form works
  4. Register and Enqueue Scripts in WordPress
  5. Register WordPress shortcode (example plugin)

Read More WordPress AJAX for Beginners

Rate My Setup


Today I sold my Asus Zenfone 5 for $50.  I bought it 2 years ago for around $200.

For the replacement, instead of getting a better phone. I bought $80 Hisense (chinese) budget phone. And I also bought cheap $15 bluetooth game-pad. And I’m very happy with it.

It’s amazing how fast technology accelerate. My new phone is faster and snappier with less than half the price of my old phone.

How to Redirect On Theme Activation


WordPress plugin have a activation method, It’s very useful, and we can use it for various things.

One of the popular method in plugin, is “Activation Redirect”, this is a method used by a lot ( I mean **A LOT**) of popular plugins to redirect user to plugin settings page, setup page, or even plugin about page (of course, within the admin panel) when user activate plugin.

This is (probably) useful for user on-boarding purpose, annoy user, keep the user inform about the feature of the plugin or help them setup the pages required by the plugin or install additional plugins/add-on.

Note: I actually really hate it when plugin/theme author did this. But in some case it could be useful.

Usually plugin use register_activation_hook() function to do this. But theme don’t have similar method/function. However, there’s a workaround for that.

Read More How to Redirect On Theme Activation

WordPress Plugin: How to NOT Store API Key/Password in Plain Text


Sometime we need to save API key, or password, for external services in our WordPress plugin. It’s problematic, since we have to use that key to make API connection, but we don’t want to save it in plain text (because it’s just plain dumb). So we need a way to encrypt this key and save it to database, and decrypt it to use. Read More WordPress Plugin: How to NOT Store API Key/Password in Plain Text

Wifi Booster using Android Phone


Yesterday, I rented a work space. 5x4m , bathroom, AC, for kinda-an-office (I heard that separating work-space and house can improve productivity).

But apparently the wifi signal sucks. It works but sometimes the connection in my laptop stop for no reason. It’s not disconnected, but simply won’t open any webpage like there’s no connection. Updating driver, changing device setting, etc don’t work.

But it works fine on my mobile devices.

So, I try to use my android phone USB tethering feature and apparently it works like a charm. So the phone will get the internet via wifi and transfer it to my laptop via USB. (So, my phone works like an USB Wifi Adapter).

Works well on my old android phone. Nice and simple solution. So, if this happen to you, and you have unused android phone, you can use this method.

Note: I tested this method with Android 4.1.2 (Jelly Bean) / 5.0 (Lollipop) and Windows 10 laptop. No additional driver needed. Just plug and play.

How To Full Backup Windows 10

Several days ago, my old secondary laptop (Win 7) suddenly crash. But I did a full backup several months ago. I simply restore it, and everything is up and running again.


Then I remember that I never do full backup on my new laptop (Win 10). Windows 10 have a weird backup system and I’m not familiar with it. So, without further ado, here’s how I do full backup on Windows 10.

Read More How To Full Backup Windows 10

WP Page Builder From Scratch #3: Data Structure and Saving Page Builder Data

This is Part #3 of Custom Page Builder Tutorials Series. Read the intro here.

In earlier tutorial, I cover all about the page builder design, and how to make all the control works (create, delete, and reorder rows).

In this post I want to explain how I structure the data and save it as custom fields. Specially in how to update the row order number so we can properly save each rows data.


Download example plugin to follow tutorial easier:

Read More WP Page Builder From Scratch #3: Data Structure and Saving Page Builder Data